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Ionic Equilibrium — JEE Main & Advanced Chemistry PYQs

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

391 questionsChemistrySolutions on every page
1

Given is a concentrated solution of a weak electrolyte A_xB_y of concentration 'c' and dissociation constant 'K'. The degree of dissociation is given by :

JEE Main 2026 Solution View → 2

M₃ A₂ is a sparingly soluble salt of molar mass y g mol ⁻¹ and solubility x g L ⁻¹ . The ratio of the molar concentration of the anion ( A³⁻ ) to the solubility product of the salt

JEE Main 2026 Solution View → 3

Arrange the following resultant mixtures in increasing order of their pH values A. 10 mL 0.2 M Ca(OH)₂ + 25 mL 0.1 M HCl B. 10 mL 0.01 M H₂ SO₄ + 10 mL 0.01 M Ca(OH)₂ C. 10 mL 0.1

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20 mL of a solution of acetic acid required 28.4 mL of 0.1 M NaOH for its neutralization. A solution (X) was prepared by mixing 20 mL of the above acetic acid and 14.2 mL of 0.1 M

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The pH of a solution obtained by mixing 5 mL of 0.1 M NH₄OH solution with 250 mL of 0.1 M NH₄Cl solution is _____ 10⁻² . (Nearest integer) Given: pK_b(NH₄OH) = 4.74 2 = 0.30 3 = 0.

JEE Main 2026 Solution View → 6

The first and second ionization constants of a weak dibasic acid H₂ A are 8.1 10⁻⁸ and 1.0 10⁻¹³ respectively. 0.1 mol of H₂ A was dissolved in 1 L of 0.1 M HCl solution. The conce

JEE Main 2026 Solution View → 7

At 25°C , 20.0 mL of 0.2 M weak monoprotic acid HX is titrated against 0.2 M NaOH. The pH of the solution (a) at the start of the titration (when NaOH has not been added) and (b) w

JEE Main 2026 Solution View → 8

The solubility product constants of Ag₂CrO₄ and AgBr are 32x and 4y respectively at 298 K. The value of ( molarity of Ag₂CrO₄ molarity of AgBr ) can be expressed as :

JEE Main 2026 Solution View → 9

Consider a weak base ' B ' of pK _ b =5.699 . ' x ' mL of 0.02 M HCl and ' y ' mL of 0.02 M weak base ' B ' are mixed to make 100 mL of a buffer of pH 9 at 25^ C . The values of '

JEE Main 2026 Solution View → 10

Consider the dissociation equilibrium of the following weak acid HA H ⁺( aq )+ A ⁻( aq ) If the pKa of the acid is 4, then the pH of 10 mMHA solution is _ _ _ _ .(Nearest integer)

JEE Main 2026 Solution View → 11

Consider two Group IV metal ions X ²⁺ and Y ²⁺ . A solution containing 0.01 M X ²⁺ and 0.01 M Y ²⁺ is saturated with H ₂ ~S . The pH at which the metal sulphide YS will form as a p

JEE Main 2026 Solution View → 12

x mg of pure HCl was used to make an aqueous solution. 25.0 mL of 0.1 M Ba ( OH )₂ solution is used when the HCl solution was titrated against it. The numerical value of x is _ _ _

JEE Main 2026 Solution View → 13

Which of the following mixture gives a buffer solution with pH =9.25 ? Given : pK _ b ( NH ₄ OH )=4.75

JEE Main 2026 Solution View → 14

The first and second ionization constants of H ₂ X are 2.5 10⁻⁸ and 1.0 10⁻¹³ respectively. The concentration of X ²⁻ in 0.1 M H ₂ X solution is _ _ _ _ 10⁻¹⁵ M . (Nearest Integer)

JEE Main 2026 Solution View → 15

At 25^ C , the concentration of H ⁺ ions in 1.00 10⁻³ M aqueous solution of a weak monobasic acid having acid dissociation constant (K_a )=4.00 10⁻¹¹ is X 10⁻⁷ M . The value of X i

JEE Advanced 2025 Solution View → 16

The solubility of barium iodate in an aqueous solution prepared by mixing 200 mL of 0.010 M barium nitrate with 100 mL of 0.10 M sodium iodate is X 10⁻⁶ ~mol dm ⁻³ . The value of X

JEE Advanced 2025 Solution View → 17

The equilibrium constant for decomposition of H ₂ O ( g ) H ₂ O ( ~g ) H ₂( ~g )+ 1 2 O ₂( ~g ) ( G ^ =92.34 ~kJ ~mol ⁻¹ ) is 8.0 10⁻³ at 2300 K and total pressure at equilibrium i

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Only litre buffer solution was prepared by adding 0.10 mol each of NH ₃ and NH ₄ Cl in deionised water. The change in pH on addition of 0.05 mol of HCl to the above solution is ___

JEE Main 2025 Solution View → 19

An aqueous solution of HCl with pH 1.0 is diluted by adding equal volume of water (ignoring dissociation of water). The pH of HCl solution would (Given 2=0.30)

JEE Main 2025 Solution View → 20

x mg of Mg ( OH )₂( molar mass =58) is required to be dissolved in 1.0 L of water to produce a pH of 10.0 at 298 K. The value of x is ________ mg. (Nearest integer) (Given : Mg ( O

JEE Main 2025 Solution View → 21

The pH of a 0.01 M weak acid HX ( K _ a =4 10⁻¹⁰ ) is found to be 5. Now the acid solution is diluted with excess of water so that the pH of the solution changes to 6. The new conc

JEE Main 2025 Solution View → 22

10 mL of 2 M NaOH solution is added to 20 mL of 1 M HCl solution kept in a beaker. Now, 10 mL of this mixture is poured into a volumetric flask of 100 mL containing 2 moles of HCl

JEE Main 2025 Solution View → 23

If equal volumes of ( AB ₂ ) and XY (both are salts) aqueous solutions are mixed, which of the following combination will give a precipitate of ( AY ₂ ) at 300 K ? (Given ( K _ sp

JEE Main 2025 Solution View → 24

Total number of non bonded electrons present in NO ₂ ⁻ ion based on Lewis theory is

JEE Main 2025 Solution View → 25

Arrange the following in increasing order of solubility product : Ca ( OH )₂, AgBr , PbS , HgS

JEE Main 2025 Solution View → 26

A weak acid HA has degree of dissociation x . Which option gives the correct expression of ( pH pK _ a )?

JEE Main 2025 Solution View → 27

K _ sp for Cr ( OH )₃ is 1.6 10⁻³⁰ . What is the molar solubility of this salt in water?

JEE Main 2025 Solution View → 28

pH of water is 7 at 25^ C . If water is heated to 80^ C ., it's pH will :

JEE Main 2025 Solution View → 29

Which of the following happens when NH ₄ OH is added gradually to the solution containing 1 M A ²⁺ and 1 MB ³⁺ ions? Given : K _ sp [ A ( OH )₂ ]=9 10⁻¹⁰ and K _ sp [ B ( OH )₃ ]=2

JEE Main 2025 Solution View → 30

If 1 mM solution of ethylamine produces pH =9 , then the ionization constant ( K _ b ) of ethylamine is 10^ -x . The value of x is ______ (nearest integer). [The degree of ionizati

JEE Main 2025 Solution View → 31

The molar solubility(s) of zirconium phosphate with molecular formula ( Zr ⁴⁺ )₃ ( PO ₄³⁻ )₄ is given by relation :

JEE Main 2025 Solution View → 32

For a sparingly soluble salt ( AB ₂ ), the equilibrium concentrations of ( A ²⁺ ) ions and (B⁻ )ions are (1.2 10⁻⁴ M ) and (0.24 10⁻³ M ), respectively. The solubility product of (

JEE Main 2024 Solution View → 33

Given below are two statements : Statement (I) : A Buffer solution is the mixture of a salt and an acid or a base mixed in any particular quantities. Statement (II) : Blood is natu

JEE Main 2024 Solution View → 34

Given below are two statements : Statement I : On passing ( HCl _ ( g ) ) through a saturated solution of ( BaCl ₂ ), at room temperature white turbidity appears. Statement II : Wh

JEE Main 2024 Solution View → 35

Solubility of calcium phosphate (molecular mass, M ) in water is W g per 100 mL at 25 ° C . Its solubility product at 25 ° C will be approximately.

JEE Main 2024 Solution View → 36

K a for CH 3 COOH is 1 . 8 × 10 - 5 and K b for NH 4 OH is 1 . 8 × 10 - 5 . The pH of ammonium acetate solution will be

JEE Main 2024 Solution View → 37

The pH of an aqueous solution containing 1 M benzoic acid pK a = 4 . 20 and 1 M sodium benzoate is 4 . 5 . The volume of benzoic acid solution in 300 mL of this buffer solution is

JEE Main 2024 Solution View → 38

The pH at which Mg ( OH ) 2 K sp = 1 × 10 - 11 begins to precipitate from a solution containing 0 . 10 M Mg 2 + ions is ______.

JEE Main 2024 Solution View → 39

Which of the following is strongest Bronsted base?

JEE Main 2024 Solution View → 40

Given below are two statements : Statement (I) : Aqueous solution of ammonium carbonate is basic. Statement (II) : Acidic/basic nature of salt solution of a salt of weak acid and w

JEE Main 2024 Solution View → 41

On decreasing the pH from 7 to 2 , the solubility of a sparingly soluble salt ( MX ) of a weak acid ( HX ) increased from 10 - 4 mol L - 1 to 10 - 3 mol L - 1 . The pK a of HX is

JEE Advanced 2023 Solution View → 42

Which of the following statement(s) is/are correct? (A) The pH of 1 × 10 – 8 M HCl solution is 8 . (B) The conjugate base of H 2 PO 4 - is HPO 4 2 - . (C) K w increases

JEE Main 2023 Solution View → 43

20 mL of 0 . 1 MNaOH is added to 50 mL of 0 . 1 M acetic acid solution. The pH of the resulting solution is × 10 - 2 . (Nearest integer) Given : pK a CH 3 COOH = 4 . 76 log 2

JEE Main 2023 Solution View → 44

25 . 0   mL of 0 . 050   M   Ba NO 3 2 is mixed with 25 . 0   mL of 0 . 020   M   NaF . K sp of BaF 2 is 0 . 5 × 10 – 6 at 298 K . The rati

JEE Main 2023 Solution View → 45

An analyst wants to convert 1 L HCl of pH = 1 to a solution of HCl of pH = 2 . The volume of water needed to do this dilution is _____ mL . (Nearest integer)

JEE Main 2023 Solution View → 46

Given below are two statements: Statement-I : Methyl orange is a weak acid. Statement-II : The benzenoid form of methyl orange is more intense/deeply coloured than the quinonoid fo

JEE Main 2023 Solution View → 47

The solubility product of BaSO 4 is 1 × 10 - 10 at 298 K . The solubility of BaSO 4 in 0 . 1 M K 2 SO 4 ( aq ) solution is ------ × 10 - 9 g L - 1 (nearest integer). Give

JEE Main 2023 Solution View → 48

The titration curve of weak acid vs. strong base with phenolphthalein as indicator is shown below. The K phenolphthalein = 4 × 10 - 10 Given: log 2 = 0 . 3 The number of follo

JEE Main 2023 Solution View → 49

Incorrect statement for the use of indicator in acid-base titration is:

JEE Main 2023 Solution View → 50

At 298 K , the solubility of silver chloride in water is 1 . 434 × 10 - 3 g L - 1 . The value of - logK sp for silver chloride is (Given mass of Ag is 107 . 9 g mol - 1 , and

JEE Main 2023 Solution View → 51

600 mL of 0 . 01 M HCl is mixed with 400 mL of 0 . 01 M H 2 SO 4 . The pH of the mixture is _____ × 10 - 2 . (Nearest integer) [Given log 2 = 0 . 30 , log 3 = 0 . 48 , log 5 =

JEE Main 2023 Solution View → 52

The volume of HCl , containing 73 g L - 1 , required to completely neutralise NaOH obtained by reacting 0 . 69 g of metallic sodium with water, is _____ mL . (Nearest Integer) (Giv

JEE Main 2023 Solution View → 53

Millimoles of calcium hydroxyide required to produce 100 mL of the aqueous solution of pH 12 is x × 10 - 1 . The value of x is _____ (Nearest integer). Assume complete dissoci

JEE Main 2023 Solution View → 54

When the hydrogen ion concentration H + changes by a factor of 1000 , the value of pH of the solution

JEE Main 2023 Solution View → 55

A litre of buffer solution contains 0 . 1 mole of each of NH 3 and NH 4 Cl . On the addition of 0 . 02 mole of HCl by dissolving gaseous HCl , the pH of the solution is found to be

JEE Main 2023 Solution View → 56

If the pKa of lactic acid is 5 , then the pH of 0 . 005 M calcium lactate solution at 25 ° C is __________ × 10 – 1 (Nearest integer)

JEE Main 2023 Solution View → 57

The dissociation constant of acetic is x   ×   10 – 5   . When 25   mL   of   0 . 2   M   CH 3 COONa solution is mixed with 25 &#

JEE Main 2023 Solution View → 58

Concentration of H 2 SO 4 and Na 2 SO 4 in a solution is 1 M and 1 . 8 × 10 - 2 M , respectively. Molar solubility of PbSO 4 in the same solution is X × 10 - Y M (express

JEE Advanced 2022 Solution View → 59

A solution is prepared by mixing 0 . 01 mol each of H 2 CO 3 , NaHCO 3 , Na 2 CO 3 , and NaOH in 100 ~mL of water. pH of the resulting solution is [Given: pK a 1 and pK a 2 of H 2

JEE Advanced 2022 Solution View → 60

200 mL of 0 . 01 MHCl is mixed with 400 mL of 0 . 01 MH 2 SO 4 . The pH of the mixture is

JEE Main 2022 Solution View → 61

If the solubility product of PbS is 8 × 10 - 28 , then the solubility of PbS in pure water at 298 K is x × 10 - 16 mol L - 1 . The value of x is____ (Nearest integer) [Gi

JEE Main 2022 Solution View → 62

K a for butyric acid C 3 H 7 COOH is 2 × 10 - 5 . The pH of 0 . 2 M solution of butyric acid is____ × 10 - 1 . (Nearest integer) [Given log 2 = 0 . 30 ]

JEE Main 2022 Solution View → 63

The Plot of pH -metric titration of weak base NH 4 OH vs strong acid HCl looks like

JEE Main 2022 Solution View → 64

At 310   K , the solubility of CaF 2 in water is 2 . 34 × 10 - 3   g / 100   mL . The solubility product of CaF 2 is ---- × 10 - 8 mol / L 3 (nearest integ

JEE Main 2022 Solution View → 65

Class XII students were asked to prepare one litre of buffer solution of pH 8 . 26 by their chemistry teacher. The amount of ammonium chloride to be dissolved by the student in 0 .

JEE Main 2022 Solution View → 66

Ka 1 , Ka 2 and Ka 3 are the respective ionization constants for the following reactions a , b and c . (a) H 2 C 2 O 4 ⇌ H + + HC 2 O 4 - (b) HC 2 O 4 - ⇌ H + + HC 2 O

JEE Main 2022 Solution View → 67

In base vs. Acid titration, at the end point methyl orange is present as

JEE Main 2022 Solution View → 68

20 mL of 0 . 1 M NH 4 OH is mixed with 40 mL of 0 . 05 M HCl . The pH of the mixture is nearest to: (Given: K b NH 4 OH = 1 × 10 - 5 , log 2 = 0 . 30 , log 3 = 0 . 48 , log 5

JEE Main 2022 Solution View → 69

The solubility of AgCl will be maximum in which of the following?

JEE Main 2022 Solution View → 70

A student needs to prepare a buffer solution of propanoic acid and its sodium salt with pH 4 . The ratio of CH 3 CH 2 COO - CH 3 CH 2 COOH required to make buffer is Given : K a CH

JEE Main 2022 Solution View → 71

p H value of 0 . 001 MNaOH solution is

JEE Main 2022 Solution View → 72

50   mL of 0 . 1   M   CH 3 COOH is being titrated against 0 . 1   M   NaOH . When 25   mL of NaOH has been added, the pH of the solution will be____

JEE Main 2022 Solution View → 73

The K sp for bismuth sulphide Bi 2 S 3 is 1 . 08 × 10 - 73 . The solubility of Bi 2 S 3 in molL - 1 at 298 K is

JEE Main 2022 Solution View → 74

Assertion: The amphoteric behaviour of water is explained by Lewis acid base theory Reason: water acts as acid with NH 3 and base with H 2 S

JEE Main 2022 Solution View → 75

The molar solubility of Zn ( OH ) 2 in 0 . 1 MNaOH solution is x × 10 - 18 M . The value of x is _____ . (Nearest integer) Given : The solubility product of Zn ( OH ) 2 is 2 &

JEE Main 2021 Solution View → 76

The pH of a solution obtained by mixing 50 mL of 1 M HCl and 30 mL of 1 M NaOH is x × 10 - 4 . The value of x is (Nearest integer) log 2 . 5 = 0 . 3979

JEE Main 2021 Solution View → 77

A 3 B 2 is a sparingly soluble salt of molar mass M g   mol - 1 and solubility x   g   L - 1 . The solubility product satisfies K sp = a x M 5 . The value of a is __

JEE Main 2021 Solution View → 78

Given below are two statements: Statement I : In the titration between strong acid and weak base methyl orange is suitable as an indicator. Statement II : For titration of acetic a

JEE Main 2021 Solution View → 79

Assuming that Ba ( OH ) 2 is completely ionised in aqueous solution under the given conditions the concentration of H 3 O + ions in 0 . 005 M aqueous solution of Ba ( OH ) 2 at 298

JEE Main 2021 Solution View → 80

A solution is 0 . 1 M in Cl - and 0 . 001 M in CrO 4 2 - . Solid AgNO 3 is gradually added to it Assuming that the addition does not change in volume and K sp ( AgCl ) = 1 . 7 &#21

JEE Main 2021 Solution View → 81

The solubility of CdSO 4 in water is 8 . 0 × 10 - 4 mol L - 1 . Its solubility in 0 . 01 M H 2 SO 4 solution is ___ × 10 - 6 mol L - 1 (Round off to the Nearest integer)

JEE Main 2021 Solution View → 82

10 . 0   ml of Na 2 CO 3 solution is titrated against 0 . 2   M   HCl solution. The following values were obtained in 5 readings. 4 . 8   ml , 4 . 9   ml ,

JEE Main 2021 Solution View → 83

In order to prepare a buffer solution of pH 5 . 74 , sodium acetate is added to acetic acid. If the concentration of acetic acid in the buffer is 1 . 0 M , the concentration of sod

JEE Main 2021 Solution View → 84

Which of the following compound CANNOT act as a Lewis base?

JEE Main 2021 Solution View → 85

0 . 01 moles of a weak acid HA   K a = 2 . 0 × 10 - 6 is dissolved in 1 . 0   L of 0 . 1 M   HCl solution. The degree of dissociation of HA is __________ ×

JEE Main 2021 Solution View → 86

Sulphurous acid H 2 SO 3 has Ka 1 = 1 . 7 × 10 - 2 and Ka 2 = 6 . 4 × 10 - 8 . The pH of 0 . 588 M H 2 SO 3 is____________ ( Round off to the Nearest Integer ) .

JEE Main 2021 Solution View → 87

Two salts A 2 X and MX have the same value of solubility product of 4 . 0 × 10 - 12 . The ratio of their molar solubilizes i.e. S A 2 X S ( MX ) = ________. (Round off to the

JEE Main 2021 Solution View → 88

The pH of ammonium phosphate solution, if pk a of phosphoric acid and pk b of ammonium hydroxide are 5 . 23 and 4 . 75 respectively, is

JEE Main 2021 Solution View → 89

The solubility of Ca OH 2 in water is : [Given : The solubility product of Ca OH 2 in water = 5 . 5 × 10 - 6 ]

JEE Main 2021 Solution View → 90

The solubility of AgCN in a buffer solution of pH = 3 is x . The value of x is: [Assume : No cyano complex is formed ; K sp AgCN = 2 . 2 × 10 - 16 and K a HCN = 6 . 2 × 1

JEE Main 2021 Solution View → 91

The solubility product of PbI 2 is 8 . 0 × 10 - 9 . The solubility of lead iodide in 0 . 1 molar solution of lead nitrate is x × 10 - 6 mol / L . The value of x is ______

JEE Main 2021 Solution View → 92

A solution of 0 . 1 M weak base ( B ) is titrated with 0 . 1 M of a strong acid ( HA ) . The variation of pH of the solution with the volume of HA added is shown in the figure belo

JEE Advanced 2020 Solution View → 93

An acidified solution of 0 . 05   M   Zn 2 + is saturated with 0 . 1   M   H 2 S . What is the minimum molar concentration ( M ) of H + required to prevent the

JEE Advanced 2020 Solution View → 94

If the solubility product of AB 2 is 3 . 20 × 10 - 11 M 3 , then the solubility of AB 2 in pure water is _______ × 10 - 4 mol L - 1 [Assuming that neither kind of ion rea

JEE Main 2020 Solution View → 95

Arrange the following solutions in the decreasing order of pOH : (A) 0 . 01 MHCl (B) 0 . 01 MNaOH (C) 0 . 01 MCH 3 COONa (D) 0 . 01 MNaCl

JEE Main 2020 Solution View → 96

A soft drink was bottled with a partial pressure of CO 2 of 3 bar over the liquid at room temperature. The partial pressure of CO 2 over the solution approaches a value of 30 bar w

JEE Main 2020 Solution View → 97

An acidic buffer is obtained on mixing:

JEE Main 2020 Solution View → 98

The solubility product of C r ( O H ) 3 at 298 K is 6.0 × 10 - 31 . The concentration of hydroxide ions in a saturated solution of C r O H 3 will be

JEE Main 2020 Solution View → 99

The K s p for the following dissociation is 1.6 × 10 - 5 P b C l 2 s ⇌ P b a q 2 + + 2 C l a q - Which of the following choices is correct for a mixture of 300 m L 0.134

JEE Main 2020 Solution View → 100

For the following Assertion and Reason, the correct option is: Assertion: The p H of water increases with increase in temperature. Reason: The dissociation of water into H + and O

JEE Main 2020 Solution View → 101

The stoichiometry and solubility product of a salt with the solubility curve given below is, respectively:

JEE Main 2020 Solution View → 102

3 g of acetic acid is added to 250 m L of 0.1 M H C l and the solution made up to 500 m L . To 20 m L of this solution 1 2 m L of 5 M N a O H is added. The p H of the solution is _

JEE Main 2020 Solution View → 103

Two solutions, A and B , each of 100 L was made by dissolving 4 g of N a O H and 9.8 g of H 2 S O 4 in water, respectively. The p H of the resultant solution obtained from mixing 4

JEE Main 2020 Solution View → 104

In an aqueous solution, the ionization constants for carbonic acid are K 1 = 4.2 × 1 0 - 7 and K 2 = 4.8 × 1 0 - 11 Select the correct statement for a saturated 0.034 M solution of

NTA Abhyas JEE Main 2020 Solution View → 105

At 25 o C , p H range of phenolphthalein is 8 - 10 . At 100 o C , pH range of phenolphthalein would be -

NTA Abhyas JEE Main 2020 Solution View → 106

The equilibrium constant for : CN - + CH 3 COOH ⇌ HCN + CH 3 COO - is : ( G i v e n p K b f o r C N - = 4.69 a n d p K b f o r C H 3 C O O - = 2.25 )

NTA Abhyas JEE Main 2020 Solution View → 107

Bromine in excess is dropped to a 0.01 M SO 2 . All of SO 2 is oxidized to H 2 SO 4 and the excess Br 2 is removed by flushing with gaseous N 2 . Determine the pH of the resulting

NTA Abhyas JEE Main 2020 Solution View → 108

The K sp of FeS = 4 × 10 − 19 at 298 K . The minimum concentration of H + ions required to prevent the precipitation of FeS from a 0 .01 M solution Fe 2 + salt by passing H 2 S (Gi

NTA Abhyas JEE Main 2020 Solution View → 109

K a for HCN is 5 x 10 - 10 at 25 o C. For maintaining a constant pH of 9, the volume of 5 M KCN solution required to be added to 10 mL of 2 M HCN solution is:

NTA Abhyas JEE Main 2020 Solution View → 110

Minimum moles of NH 3 required to be added to 1 L solution so as to dissolve 0 .1 mol of AgCl ( K sp = 1 .0 × 10 − 10 ) by the reaction is: AgCl(s) + 2 NH 3 ⇌ Ag NH 3 2 + + Cl - Gi

NTA Abhyas JEE Main 2020 Solution View → 111

For the indicator, HIn; the ratio In - HIn is 7 .0 at pH of 4 .3 . K In for the indicator is [ Given: log 7 = 0 .845 and Antilog ( − 3.455 ) = 3.5 × 10 − 4 ]

NTA Abhyas JEE Main 2020 Solution View → 112

If the pK a of acetic acid and pK b of NH 4 OH are 4.76 and 4.75 respectively, what will be the pH of ammonium acetate solution?

NTA Abhyas JEE Main 2020 Solution View → 113

What is H + in a solution that is 0.01 M in H C N and 0.02 M in NaCN? br /> ( K a for H C N = 6.2 × 1 0 - 10 )

NTA Abhyas JEE Main 2020 Solution View → 114

If the concentration of [ N H 4 + ] in a solution having 0.02 M N H 3 and 0.005 M C a O H 2 is a × 10 - 6 M , determine a . [ k b N H 3 = 1.8 × 10 - 5 ]

NTA Abhyas JEE Main 2020 Solution View → 115

What is the OH − concentration of a 0 .04 M solution of CH 3 COONa? [K a of CH 3 COONa = 2 × 10 − 5 , log 2 = 0 .30, log 5 = 0 .69, 10 0 .7 ≅ 5]

NTA Abhyas JEE Main 2020 Solution View → 116

Calculate dissociation constant for an acid HA having [ H + ] equals to 0 .1 M (Given: degree of dissociation of HA is 1% )

NTA Abhyas JEE Main 2020 Solution View → 117

The Solubility of A B 2 is 0 .05 g per 100 mL at 25 o C . Calculate K sp of A B 2 at 25 o C? [Atomic mass of A = 20 amu, atomic mass of B = 40 amu ]

NTA Abhyas JEE Main 2020 Solution View → 118

One litre of 1 M solution of an acid HA K a = 10 − 4 at 25 o C has pH = 2 . It is diluted by water so the new p H becomes double. The solution was diluted to y × 1 0 z m l . The va

NTA Abhyas JEE Main 2020 Solution View → 119

When 0.01 moles of the following acids are dissolved in 1 L of H 2 O , the [ H + ] will be greatest in: -

NTA Abhyas JEE Main 2020 Solution View → 120

p H of a 1000 c c solution is 2 . It will not change if

NTA Abhyas JEE Main 2020 Solution View →
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