Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The standard electrode potential E Θ and its temperature coefficient 
for a cell are 2 V and –5 × 10 –4 VK –1 at 300 K respectively. The cell reaction is
Zn(s) + Cu 2+ (aq) → Zn 2+ (aq) + Cu(s)
The standard reaction enthalpy ( Δ r H Θ ) at 300 K in kJ mol –1 is:
(Use R = 8JK –1 mol –1 and F = 96,000 Cmol –1 )
Text Solution
Verified by ExpertsThe correct answer is:
D
Δ H = – nFE cell + nFT 
= –2 × 96000 × 2 + 2 × 96000 × 300 × (–5 × 10 –4 )
= – 384000 – 28,800
= – 412.8 kJ/mol
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
Standard electrode potential data are useful for understanding the suitability of an oxidant in a r…
Two students use the same stock solution of ZnSO 4 and different solutions of CuSO 4 to make Daniel…
The emf of the cell, Zn | Zn 2+ (0.01 M) || Fe 2+ (0.001 M) | Fe at 298 K is 0.2905 V. Then the val…
Find the equilibrium constant at 298 K for the reaction :
Cu 2+ (aq) + In 2+ (aq) Cu + (aq) + In 3…
The half cell reactions for rusting of iron are :
2H + + O 2 + 2e – ⎯→ H 2 O; Eº = +1.23 V & Fe 2+…
Redox reactions play a pivoted role in chemistry and biology. The values of standard redox potentia…