Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Olympiad workbookNSECElectrochemistry

From the given standard electrode potentials array ll Sn ⁴⁺( aq )+2 e ⁻ Sn ²⁺( aq ) & E ^0=0.15 ~V Br ₂( l )+2 e ⁻ 2 Br ⁻( aq ) & E ^0=1.07 ~V array The approximate free energy change for the process 2 Br ⁻( aq )+ Sn ⁴⁺( aq ) Br ₂( l )+ Sn ²⁺( aq ) is

Options

  1. A177.6 kJ
  2. B355 kJ
  3. C-177.6 ~kJ
  4. D-355 ~kJ

Correct answer

A. 177.6 kJ

Step-by-step solution

No Solution

Practice Electrochemistry on Quantrex Academy →

More from Electrochemistry

NaOH solution is added dropwise to HCl solution and the conductance of the mixture is measured after addition of each drop. The variation of conductance with volume of NaOH added iReaction E ₀ / V Ag Ag ⁺+ e ⁻ -0.80 Cr ³⁺+3 e ⁻ 3 Cr -0.74 Zn ²⁺+2 e ⁻ Zn -0.76 I ₂( ~s )+2 e ⁻ 2 I ⁻ 0.54 Co ²⁺+2 e ⁻ Co -0.28 Ni ²⁺+2 e ⁻ Ni -0.26 The best reducing agent among tWhen a medal is electroplated with silver (Ag)Given the E₀ values for the half reactions: aligned & Sn ⁴⁺+2 e ⁻ Sn ²⁺, 0.15 ~V & 2 Hg ²⁺+2 e ⁻ Hg ₂²⁺, 0.92 ~V & PbO ₂+4 H ⁺+2 e ⁻ Pb ²⁺+2 H ₂ O , 1.45 ~V aligned Which of the foReaction E ₀ / V Ag Ag ⁺+ e ⁻ -0.80 Cr ³⁺+3 e ⁻ 3 Cr -0.74 Zn ²⁺+2 e ⁻ Zn -0.76 I ₂( ~s )+2 e ⁻ 2 I ⁻ 0.54 Co ²⁺+2 e ⁻ Co -0.28 Ni ²⁺+2 e ⁻ Ni -0.26 E ^0 of the given cell is arrayWhich of the following statements is not correct regarding the galvanic cells?The standard potentials (E^ ) of MnO ₄⁻ / Mn ²⁺ and MnO ₂ / Mn ²⁺ half cells in acidic medium are 1.51 V and 1.23 V respectively at 298 K . The standard potential of MnO ₄⁻ / MnO ₂The standard electrode potential ( E ^0 ) of the Daniel cell is 1.1 V and the overall cell reaction can be represented as Zn ( s )+ Cu ²⁺( aq ) Zn ²⁺( aq )+ Cu ( s ) . Under which Full Electrochemistry list All Olympiad workbook PYQs