Published by:
CGP EDU Academic Team
Published on: August 14, 2026
At 298 K, the standard reduction potential for Cu 2+ /Cu electrode is 0.34V. Given : K sp Cu(OH) 2 = 1 x 10 -20 Take 
= 0.059 V The reduction potential at pH = 14 for the above couple is (-)x 
10 -2 V. The value of x is
Text Solution
Verified by ExpertsThe correct answer is:
25
(25) For the reaction:
Cu 2+ (aq)+2e - 
Cu(s)
The reduction potential is
From the given data pH = 14 and
K sp =(Cu(OH) 2 )= 1.0 x10 -20 , we get
E = 0.34-0.59 = -0.25V
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
Choose the correct representation of conductometric titration of benzoic acid vs sodium hydroxide.
The standard electrode potential (M 3+ /M 2+ ) for V, Cr, Mn & Co are -0.26 V, - 0,41 V, + 1.57 V a…
Following figure shows dependence of molar conductance of two electrolytes on concentration. is th…
Which one of the following statements is correct for electrolysis of brine solution?
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 …
Consider the cell
Pt(s)|H 2 (s)(1atm)|H(aq,[H + ] = l)||Fe 3+ (aq),Fe 2+ (aq)|Pt(s)
Given : = 0.77…