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Electrochemistry — JEE Main & Advanced Chemistry PYQs

526 previous year questions from Electrochemistry with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

526 questionsChemistrySolutions on every page
1

At 300 K, the molar conductivities of the aqueous solutions of three salts at two different concentrations are given below: Salt Concentration (M) Molar conductivity (S cm ^2 mol ⁻

JEE Advanced 2026 Solution View → 2

Given at 298 K: E^ _ Fe²⁺/Fe = X Volt; E^ _ Fe³⁺/Fe = Y Volt. The E^ _ Fe³⁺/Fe²⁺ in Volt at 298 K is given by:

JEE Main 2026 Solution View → 3

For a general redox reaction Anode : Red ₁ Ox ₁^ n₁^+ + n₁ e^- Cathode : Ox ₂ + n₂ e^- Red ₂^ n₂^- Which of the following statements is incorrect?

JEE Main 2026 Solution View → 4

Consider the following data. Electrolyte ^ _m (S cm ^2 mol ⁻¹ ) BaCl ₂ x₁ H ₂ SO ₄ x₂ HCl x₃ BaSO ₄ is sparingly soluble in water. If the conductivity of the saturated BaSO ₄ solut

JEE Main 2026 Solution View → 5

One half cell in a voltaic cell is constructed by dipping silver rod in AgNO₃ solution of unknown concentration, other half cell is Zn rod dipped in 1 molar solution of ZnSO₄ . A v

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At 298 K , the molar conductivity of x % (w/w) MX solution (aqueous) is 123.5 S cm ^2 mol ⁻¹ . The conductance of same solution is 1.9 10⁻³ S . The value of x is _______ 10⁻² . (Gi

JEE Main 2026 Solution View → 7

An electrochemical cell, consist of the following two redox couples, M^ x+ (aq)/M(s)[E_ red ^ =+0.15 V ] and Fe³⁺(aq)/Fe(s)[E_ red ^ =-0.036 V ] . The cell EMF (E_ cell ) is record

JEE Main 2026 Solution View → 8

Consider the following two half-cell reactions along with the standard reduction potential given: CO₂ + 6H^+ + 6e^- CH₃ OH + H₂ O E°_ red = 0.02 V 1 2 O₂ + 2H^+ + 2e^- H₂ O E°_ red

JEE Main 2026 Solution View → 9

An electrochemical cell is constructed using half cells in the direction of spontaneous change Fe(OH)₂(s) + 2e^- Fe(s) + 2OH^-(aq) E^ = -0.88 V and AgBr(s) + e^- Ag(s) + Br^-(aq) E

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For strong electrolyte _ m increases slowly with dilution and can be represented by the equation _ m = _ m ^ - Ac ^ 1 / 2 Molar conductivity values of the solutions of strong elect

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A volume of x , mL of 5 , M , NaHCO₃ solution was mixed with 10 , mL of 2 , M , H₂CO₃ solution to make an electrolytic buffer. If the same buffer was used in the following electroc

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Consider the following redox reaction taking place in acidic medium BH ₄⁻(a q)+ ClO ₃⁻(a q) H ₂ BO ₃⁻(a q)+ Cl ⁻(a q) If the Nernst equation for the above balanced reaction is E _

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Molar conductivity of a weak acid HQ of concentration 0.18 M was found to be 1 / 30 of the molar conductivity of another weak acid HZ with concentration of 0.02 M. If ^ Q ⁻ happene

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Electricity is passed through an acidic solution of Cu ²⁺ till all the Cu ²⁺ was exhausted, leading to the deposition of 300 mg of Cu metal. However, a current of 600 mA was contin

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Consider the above electrochemical cell where a metal electrode (M) is undergoing redox reaction by forming M ⁺ ( M M ⁺+ e ⁻ ) . The cation M ⁺ is present in two different concentr

JEE Main 2026 Solution View → 16

In the given electrochemical cell, Ag ( s )| AgCl ( s )| FeCl ₂( aq ), FeCl ₃( aq ) Pt ( s ) at 298 K, the cell potential ( E _ cell ) will increase when : A. Concentration of Fe ²

JEE Main 2026 Solution View → 17

Consider the following reduction processes : Al ³⁺+3 e ⁻ Al ( s ), E ⁰=-1.66 ~V Fe ³⁺+ e ⁻ Fe ²⁺, E ⁰=+0.77 ~V Co ³⁺+ e ⁻ Co ²⁺, E ⁰=+1.81 ~V Cr ³⁺+3 e ⁻ Cr ( s ), E ^ =-0.74 ~V Th

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Consider the following electrochemical cell : Pt | O ₂( ~g )(1 bar ) | HCl ( aq ) | M ²⁺( aq , 1.0 M ) M ( ~s ) The pH above which, oxygen gas would start to evolve at anode is _ _

JEE Main 2026 Solution View → 19

Consider the following electrochemical cell at 298 K Pt | HSnO ₂ ⁻( aq ) | Sn ( OH )₆ ²⁻( aq ) | OH ⁻( aq ) | Bi ₂ O ₃( ~s ) Bi ( s ) . If the reaction quotient at a given time is

JEE Main 2026 Solution View → 20

For a closed circuit Daniell cell, which of the following plots is the accurate one at a given temperature?

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MX is a sparingly soluble salt that follows the given solubility equilibrium at 298 K. MX ( s ) M ⁺( aq )+ X ⁻( aq ) ; K _ sp =10⁻¹⁰ If the standard reduction potential for M ⁺( aq

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The pH and conductance of a weak acid (HX) was found to be 5 and 4 10⁻⁵ ~S , respectively. The conductance was measured under standard condition using a cell where the electrode pl

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In an electrochemicalcell, dichromate ions in aqueous acidic medium are reduced to Cr ³⁺ . The current (in amperes) that flows through the cell for 48.25 minutes to produce 1 mole

JEE Advanced 2025 Solution View → 24

An electrochemical cell is fueled by the combustion of butane at 1 bar and 298 K . Its cell potential is X F 10^3 volts, where F is the Faraday constant. The value of X is . Use :

JEE Advanced 2025 Solution View → 25

Consider the following half cell reaction Cr ₂ O ₇²⁻( aq )+6 e ⁻+14 H ⁺( aq ) 2 Cr ³⁺( aq )+7 H ₂ O ( l ) The reaction was conducted with the ratio of [ Cr ³⁺ ]^2 [ Cr ₂ O ₇²⁻ ] =1

JEE Main 2025 Solution View → 26

Given below are two statements : 1 M aqueous solution of each of Cu ( NO ₃ )₂, AgNO ₃ , Hg ₂ ( NO ₃ )₂ ; Mg ( NO ₃ )₂ are electrolysed using inert electrodes, aligned & Given : E _

JEE Main 2025 Solution View → 27

1 Faraday electricity was passed through Cu ²⁺(1.5 M , 1 ~L ) / Cu and 0.1 Faraday was passed through Ag ⁺(0.2 M , 1 ~L ) / Ag electrolytic cells. After this the two cells were con

JEE Main 2025 Solution View → 28

Given below are two statements : Statement I : Mohr's salt is composed of only three types of ions-ferrous, ammonium and sulphate. Statement II : If the molar conductance at infini

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The molar conductance of an infinitely dilute solution of ammonium chloride was found to be 185 ~S ~cm ^2 ~mol ⁻¹ and the ionic conductance of hydroxyl and chloride ions are 170 an

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On charging the lead storage battery, the oxidation state of lead changes from x₁ to y₁ at the anode and from x₂ to y₂ at the cathode. The values of x₁, y₁, x₂, y₂ are respectively

JEE Main 2025 Solution View → 31

The standard cell potential ( E _ cell ^ ) of a fuel cell based on the oxidation of methanol in air that has been used to power television relay station is measured as 1.21 V. The

JEE Main 2025 Solution View → 32

40 mL of a mixture of CH ₃ COOH and HCl (aqueous solution) is titrated against 0.1 M NaOH solution conductometrically. Which of the following statement is correct?

JEE Main 2025 Solution View → 33

Correct order of limiting molar conductivity for cations in water at 298 K is :

JEE Main 2025 Solution View → 34

0.2 %( w / v ) solution of NaOH is measured to have resistivity 870.0 ~m ~m . The molar conductivity of the solution will be ______ 10^2 mS dm ^2 ~mol ⁻¹ . (Nearest integer)

JEE Main 2025 Solution View → 35

Consider the following electrochemical cell at standard condition. ( aligned & Au ( s ) | QH ₂, Q | NH ₄ X (0.01 M )| | Ag ⁺(1 M ) Ag ( s ) & E _ cell =+0.4 ~V aligned ) The couple

JEE Main 2025 Solution View → 36

O ₂ gas will be evolved as a product of electrolysis of : (A) an aqueous solution of AgNO ₃ using silver electrodes. (B) an aqueous solution of AgNO ₃ using platinum electrodes. (C

JEE Main 2025 Solution View → 37

Match List - I with List - II : ( array llll & List - I & List - II & Applications & Batteries / Cell (A) & Transistors & (I) Anode - Zn / Hg ; Cathode - HgO + C (B) & Hearing aids

JEE Main 2025 Solution View → 38

The molar conductivity of a weak electrolyte when plotted against the square root of its concentration, which of the following is expected to be observed ?

JEE Main 2025 Solution View → 39

The standard reduction potential values of some of the p-block ions are given below. Predict the one with the strongest oxidising capacity.

JEE Main 2025 Solution View → 40

For a ( Mg | Mg ²⁺( aq ) | | Ag ⁺( aq ) | Ag ) the correct Nernst Equation is :

JEE Main 2025 Solution View → 41

Electrolysis of 600 mL aqueous solution of NaCl for 5 min changes the pH of the solution to 12 . The current in Amperes used for the given electrolysis is ____. (Nearest integer).

JEE Main 2025 Solution View → 42

Given below is the plot of the molar conductivity vs concentration for KCl in aqueous solution. If, for the higher concentration of KCl solution, the resistance of the conductivity

JEE Main 2025 Solution View → 43

Based on the data given below : array ll E _ Cr ₂ O ₇²⁻ / Cr ³⁺ ^ =1.33 ~V & E _ Cl ₂ / Cl ^ (-) ^ =1.36 ~V E _ MnO ₄⁻ / Mn ²⁺ ^ =1.51 ~V & E _ Cr ³⁺ / Cr ^ =-0.74 ~V array the str

JEE Main 2025 Solution View → 44

For the given cell Fe ²⁺ _ ( aq ) + Ag ⁺ _ ( aq ) Fe _ ( aq ) ³⁺+ Ag _ ( s ) The standard cell potential of the above reaction is Given: array lr Ag ⁺+ e ⁻ Ag & E ^ = xV Fe ²⁺+2 e

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Standard electrode potentials for a few half cells are mentioned below : aligned & E _ Cu ²⁺ / Cu ^ =0.34 ~V , E _ Zn ²⁺ / Zn ^ =-0.76 ~V & E _ Ag ⁺ / Ag ^ =0.80 ~V , E _ Mg ²⁺ / M

JEE Main 2025 Solution View → 46

FeO ₄²⁻ +2.0 v Fe ³⁺ 0.8 v Fe ²⁺ -0.5 v Fe ^0 In the above diagram, the standard electrode potentials are given in volts (over the arrow). The value of E _ FeO ₄²⁻ / Fe ²⁺ ^ O is

JEE Main 2025 Solution View → 47

Given below are two statements : Statement (I) : Corrosion is an electrochemical phenomenon in which pure metal acts as an anode and impure metal as a cathode. Statement (II) : The

JEE Main 2025 Solution View → 48

A solution of aluminium chloride is electrolysed for 30 minutes using a current of 2 A . The amount of the aluminium deposited at the cathode is [Given : molar mass of aluminium an

JEE Main 2025 Solution View → 49

An aqueous solution of hydrazine ( N ₂ H ₄ ) is electrochemically oxidized by O ₂ , thereby releasing chemical energy in the form of electrical energy. One of the products generate

JEE Advanced 2024 Solution View → 50

In a conductometric titration, small volume of titrant of higher concentration is added stepwise to a larger volume of titrate of much lower concentration, and the conductance is m

JEE Advanced 2024 Solution View → 51

Which out of the following is a correct equation to show change in molar conductivity with respect to concentration for a weak electrolyte, if the symbols carry their usual meaning

JEE Main 2024 Solution View → 52

Match List I with List II ( array |l|l|l|l| & List - I (Cell) & & List - II (Use/Property/Reaction) A. & Leclanche cell & I. & array l Converts energy of combustion into electrical

JEE Main 2024 Solution View → 53

The molar conductivity for electrolytes (A ) and (B ) are plotted against (C^ 1 / 2 ) as shown below. Electrolytes (A ) and (B ) respectively are :

JEE Main 2024 Solution View → 54

The standard reduction potentials at (298 ~K ) for the following half cells are given below : ( array ll Cr ₂ O ₇²⁻+14 H ⁺+6 e ⁻ 2 Cr ³⁺+7 H ₂ O , E ^ =1.33 ~V Fe ³⁺( aq )+3 e ⁻ Fe

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The emf of cell Tl ( | (0.001 M ) Tl ⁺ | | (0.01 M ) Cu ²⁺ | Cu ) is (0.83 ~V ) at (298 ~K ). It could be increased by :

JEE Main 2024 Solution View → 56

The reaction; ( 1 2 H _ 2( ~g ) + AgCl _ ( s ) H _ ( aq ) ⁺+ Cl _ ( aq ) ⁻+ Ag _ ( s ) ) occurs in which of the following galvanic cell :

JEE Main 2024 Solution View → 57

How can an electrochemical cell be converted into an electrolytic cell?

JEE Main 2024 Solution View → 58

A conductivity cell with two electrodes (dark side) are half filled with infinitely dilute aqueous solution of a weak electrolyte. If volume is doubled by adding more water at cons

JEE Main 2024 Solution View → 59

The quantity of silver deposited when one coulomb charge is passed through ( AgNO ₃ ) solution :

JEE Main 2024 Solution View → 60

For the electro chemical cell ( gathered If E _ ( M ²⁺ / M ) ^0=0.46 ~V and E _ ( x / X ²⁻ ) ^0=0.34 ~V . gathered ) Which of the following is correct?

JEE Main 2024 Solution View → 61

The reaction at cathode in the cells commonly used in clocks involves.

JEE Main 2024 Solution View → 62

Molar ionic conductivities of divalent cation and anion are (57 ~S ~cm ^2 ~mol ⁻¹ ) and (73 ~S ~cm ^2 ~mol ⁻¹ ) respectively. The molar conductivity of solution of an electrolyte w

JEE Main 2024 Solution View → 63

For a strong electrolyte, a plot of molar conductivity against (concentration) ( ^ 1 / 2 ) is a straight line, with a negative slope, the correct unit for the slope is

JEE Main 2024 Solution View → 64

Fuel cell, using hydrogen and oxygen as fuels, A. has been used in spaceship B. has as efficiency of (40 % ) to produce electricity C. uses aluminum as catalysts D. is eco-friendry

JEE Main 2024 Solution View → 65

What pressure (bar) of ( H ₂ ) would be required to make emf of hydrogen electrode zero in pure water at (25^ C ) ?

JEE Main 2024 Solution View → 66

One of the commonly used electrode is calomel electrode. Under which of the following categories, calomel electrode comes?

JEE Main 2024 Solution View → 67

The amount of electricity in Coulomb required for the oxidation of 1 mol of H 2 O to O 2 is ______ × 10 5 C .

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Consider the following redox reaction: MnO 4 - + H + + H 2 C 2 O 4 ⇌ Mn 2 + + H 2 O + CO 2 The standard reduction potentials are given as below E red ° E 0 MnO 4 - / Mn 2 + = + 1 .

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The potential for the given half cell at 298 K is - ............ × 10 - 2 V . 2 H ( aq ) + + 2 e - → H 2 ( g ) H + = 1 M , P H 2 = 2 atm (Given 2 . 303 RT / F = 0 . 06 V , log 2 =

JEE Main 2024 Solution View → 70

The values of conductivity of some materials at 298 .15 K in Sm − 1 are 2 .1 × 10 3 , 1 .0 × 10 − 16 , 1 .2 × 10 , 3 .91 , 1 .5 × 10 − 2 , 1 × 10 − 7 , 1 .0 × 10 3 . The number of

JEE Main 2024 Solution View → 71

The metals that are employed in the battery industries are A. Fe, B. Mn, C. Ni, D. Cr, E. Cd Choose the correct answer from the options given below:

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Identify the factor from the following that does not affect electrolytic conductance of a solution.

JEE Main 2024 Solution View → 73

One Faraday of electricity liberates x × 10 – 1 gram atom of copper from copper sulphate, x is______.

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Reduction potential of ions are given below: ClO 4 - IO 4 - BrO 4 - E ° = 1 . 19 V ; E ° = 1 . 65 V ; E ° = 1 . 74 V The correct order of their oxidising power is:

JEE Main 2024 Solution View → 75

A constant current was passed through a solution of AuCl 4 - ion between gold electrodes. After a period of 10 . 0 minutes, the increase in mass of cathode was 1 . 314 g . The tota

JEE Main 2024 Solution View → 76

The mass of zinc produced by the electrolysis of zinc sulphate solution with a steady current of 0 . 015 A for 15 minutes is _ _ _ _ × 10 - 4 g . (Atomic mass of zinc = 65 . 4 amu

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Which of the following statements is not correct about rusting of iron?

JEE Main 2024 Solution View → 78

The hydrogen electrode is dipped in a solution of pH = 3 at 25 ° C . The potential of the electrode will be - ______ × 10 - 2 V . 2 . 303 RT F = 0 . 059 V Round off the answer to t

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The mass of silver (Molar mass of Ag : 108 gmol - 1 ) displaced by a quantity of electricity which displaces 5600 mL of O 2 at S.T.P. will be _____ g.

JEE Main 2024 Solution View → 80

Plotting 1 / Λ m against cΛ m for aqueous solutions of a monobasic weak acid ( HX ) resulted in a straight line with y - axis intercept of P and slope of S . The ratio P

JEE Advanced 2023 Solution View → 81

The number of correct statements from the following is ___________ (A) Conductivity always decreases with decrease in concentration for both strong and weak electrolytes. (B) The n

JEE Main 2023 Solution View → 82

At 298 K , the standard reduction potential for Cu 2 + / Cu electrode is 0 . 34 V . Given : K sp Cu ( OH ) 2 = 1 × 10 - 20 Take 2 . 303 RT F = 0 . 059 V The reduction potentia

JEE Main 2023 Solution View → 83

A metal surface of 100 cm 2 area has to be coated with nickel layer of thickness 0 . 001 mm . A current of 2 A was passed through a solution of Ni NO 3 2 for ‘ x ’ seco

JEE Main 2023 Solution View → 84

For lead storage battery pick the correct statements A. During charging of battery, PbSO 4 on anode is converted into PbO 2 B. During charging of battery, PbSO 4 on cathode is conv

JEE Main 2023 Solution View → 85

The number of correct statements from the following is........... A. E cell is an intensive parameter B. A negative E o means that the redox couple is a stronger reducing agent tha

JEE Main 2023 Solution View → 86

In an electrochemical reaction of lead, at standard temperature, if E Pb 2 + / Pb o = m Volt and E Pb 4 + / Pb o = n Volt , then the value of E ° Pb 2 + / Pb 4 + is given by m

JEE Main 2023 Solution View → 87

The specific conductance of 0 . 0025 M acetic acid is 5 × 10 - 5 S cm - 1 at a certain temperature. The dissociation constant of acetic acid is ___________ × 10 - 7 .(Nea

JEE Main 2023 Solution View → 88

The reaction occurs in which of the given galvanic cell? 1 2 H 2 ( g ) + AgCl ( s ) ⇌ H + ( aq ) + Cl - ( aq ) + Ag ( s )

JEE Main 2023 Solution View → 89

The product, which is not obtained during the electrolysis of brine solution is

JEE Main 2023 Solution View → 90

The standard reduction potentials at 295 K for the following half cells are given below: NO 3 - + 4 H + + 3 e - → NO g + 2 H 2 O E o = 0 . 97 V V 2 + aq + 2 e - → V s E

JEE Main 2023 Solution View → 91

The standard electrode potential of M + / M in aqueous solution does not depend on

JEE Main 2023 Solution View → 92

1 × 10 - 5   M   AgNO 3 is added to 1   L of saturated solution of AgBr . The conductivity of this solution at 298   K is _ _ _ _ _ _ _ × 10 - 8 &#160

JEE Main 2023 Solution View → 93

At what pH , given half cell MnO 4 - ( 0 . 1 M ) ∣ Mn 2 + ( 0 . 001 M ) will have electrode potential of 1 . 282 V ? (Nearest Integer) Given E MnO 4 - / Mn 2 + o = 1 . 54 V ,

JEE Main 2023 Solution View → 94

The resistivity of a 0 . 8 M solution of an electrolyte is 5 × 10 - 3 Ωcm . Its molar conductivity is 10 4 Ω - 1 cm 2 mol - 1 . (Nearest integer)

JEE Main 2023 Solution View → 95

Which one of the following statements is correct for electrolysis of brine solution?

JEE Main 2023 Solution View → 96

The logarithm of equilibrium constant for the reaction Pd 2 + + 4 Cl - ⇌ PdCl 4 2 - is (Nearest integer) Given: 2 . 303 RT F = 0 . 06 V Pd ( aq ) 2 + + 2 e - ⇌ Pd ( s )

JEE Main 2023 Solution View → 97

The electrode potential of the following half cell at 298 K X X 2 + 0 . 001 M ‖ Y 2 + 0 . 01 M Y is _____ × 10 - 2 V (Nearest integer) Given : E X 2 + ∣ X 0 = - 2

JEE Main 2023 Solution View → 98

Consider the cell Pt s H 2 g , 1 atm H + aq , 1 M | Fe 3 + aq , Fe 2 + aq Pt s When the potential of the cell is 0 . 712 V at 298 K , the ratio Fe 2 + / Fe 3 + is (Nearest integer)

JEE Main 2023 Solution View → 99

The equilibrium constant for the reaction Zn s + Sn 2 + aq ⇌ Zn 2 + aq + Sn s is 1 × 10 20 at 298 K . The magnitude of standard electrode potential of Sn / Sn 2 + if E Z

JEE Main 2023 Solution View → 100

The standard electrode potential ( M 3 + / M 2 + ) for V , Cr , Mn & Co are - 0 . 26 V , - 0 . 41 V , + 1 . 57 V and + 1 . 97 V , respectively. The metal ions which can liberate H

JEE Main 2023 Solution View → 101

Following figure shows dependence of molar conductance of two electrolytes on concentration. Λ m 0 is the limiting molar conductivity. The number of Incorrect statement(s) fro

JEE Main 2023 Solution View → 102

Pt ( s ) H 2 ( g ) ( 1 bar ) H + ( aq ) ( 1 M ) M 3 + ( aq ) , M + ( aq ) Pt ( s ) The E cell for the given cell is 0 . 1115 V at 298 K When M + ( aq ) M 3 + ( aq ) = 10 a The valu

JEE Main 2023 Solution View → 103

Consider the cell Pt ( s ) H 2 ( s ) ( latm ) H + aq , H + = 1 | | Fe 3 + ( aq ) , Fe 2 + ( aq ) ∣ Pt ( s ) Given: E Fe 3 + / Fe 2 + ° = 0 . 771 V and E H + / 1 2 H 2 &#

JEE Main 2023 Solution View → 104

At 298 K , a 1 litre solution containing 10 mmol of Cr 2 O 7 2 - and 100 mmol of Cr 3 + shows a pH of 3 . 0 . Given : Cr 2 O 7 → 2 - Cr 3 + ; E 0 = 1 . 330 V and 2 . 303 RT F

JEE Main 2023 Solution View → 105

Consider the strong electrolytes Z m X n , U m Y p and V m X n . Limiting molar conductivity of U m Y p and V m X n are 250 and 440 S cm 2 mol - 1 , respectively. The value of m +

JEE Advanced 2022 Solution View → 106

The reduction potential E 0 , in V of MnO 4 - aq / Mn s is [Given: E MnO 4 - aq / MnO 2 s o = 1 . 68   V ;   E MnO 2 s / Mn 2 + aq o = 1 . 21   V ;     E M

JEE Advanced 2022 Solution View → 107

For a cell, Cu s Cu 2 + 0 . 001 M ) Ag + 0 . 01 M Ag s the cell potential is found to be 0 . 43 V at 298 K . The magnitude of standard electrode potential for Cu 2 + | Cu is____ &#

JEE Main 2022 Solution View → 108

Resistance of a conductivity cell (cell constant 129 m - 1 ) filled with 74 . 5 ppm solution of KCl is 100 Ω (labelled as solution 1 ). When the same cell is filled with KCl s

JEE Main 2022 Solution View → 109

Match List-I with List-II. List-I List-II A Cd s + 2 Ni OH 3 s → CdO s + 2 Ni OH 2 s + H 2 O l I Primary battery B Zn Hg + HgO s → ZnO s + Hg l II Discharging of second

JEE Main 2022 Solution View → 110

Given below are two statements: Statement I: For KI , molar conductivity increases steeply with dilution. Statement II: For carbonic acid, molar conductivity increases slowly with

JEE Main 2022 Solution View → 111

The amount of charge in F (Faraday) required to obtain one mole of iron from Fe 3 O 4 is ______. (Round off the answer to the nearest integer)

JEE Main 2022 Solution View → 112

The molar conductivity of a conductivity cell filled with 10 moles of 20 mL NaCl solution is Λ m 1 and that of 20 moles another identical cell heaving 80 mL NaCl solution is &

JEE Main 2022 Solution View → 113

The cell potential for Zn Zn 2 + ( aq ) ‖ Sn x + Sn is 0 . 801 V at 298 K . The reaction quotient for the above reaction is 10 - 2 . The number of electrons involved in the g

JEE Main 2022 Solution View → 114

The cell potential for the given cell at 298   K   Pt H 2 g , 1   bar H + aq ‖ Cu 2 + aq Cu s is 0 . 31   V . The pH of the acidic solution is found to be

JEE Main 2022 Solution View → 115

A dilute solution of sulphuric acid is electrolysed using a current of 0 . 10 A for 2 hours to produce hydrogen and oxygen gas. The total volume of gases produced at STP is cm 3 .

JEE Main 2022 Solution View → 116

For the given reactions Sn 2 + + 2 e - → Sn Sn 4 + + 4 e - → Sn the electrode potentials are ; E Sn 2 + / Sn ° = - 0 . 140   V and E Sn 4 + / Sn ° = 0 .

JEE Main 2022 Solution View → 117

The solubility product of a sparingly soluble salt A 2 X 3 is 1 . 1 × 10 - 23 . If specific conductance of the solution is 3 × 10 - 5 Sm - 1 , the limiting molar conducti

JEE Main 2022 Solution View → 118

The quantity of electricity in Faraday needed to reduce 1 mol of Cr 2 O 7 2 - to Cr 3 + is

JEE Main 2022 Solution View → 119

In 3 d series, the metal having the highest M 2 + / M standard electrode potential is

JEE Main 2022 Solution View → 120

For the reaction taking place in the cell: Pt s H 2 g H + aq Ag + aq Ag s E cell ° = + 0 . 5332 V . The value of Δ f G ⊖ is kJmol - 1 . (in nearest integer)

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