JEE Main 2021 — Electrochemistry Question with Solution
From: JEE Main 2021 (Online) 26th August Evening Shift
Question
For the galvanic cell,
Zn(s) + Cu2+ (0.02 M) Zn2+ (0.04 M) + Cu(s),
Ecell = ______________ 102 V. (Nearest integer)
[Use : = 0.34 V, = + 0.76 V, ]
Zn(s) + Cu2+ (0.02 M) Zn2+ (0.04 M) + Cu(s),
Ecell = ______________ 102 V. (Nearest integer)
[Use : = 0.34 V, = + 0.76 V, ]
Enter your answer
Show full solutionCorrect answer: 109
Correct answer
109
Step-by-step explanation
Galvanic cell :
Nernst equation =
= 1.0911 = 109.11 102
= 109
Nernst equation =
= 1.0911 = 109.11 102
= 109
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Electrochemistry chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2021, covering the Electrochemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.