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What is the potential of half cell consisting of  electrode in  solution at  250C(E0oxi=0.763V)

 

A. 

 

0.8221V

 

B. 

 

8.221V

 

C. 

 

0.5282V

 

D. 

 

9.282V

 

Asked by s.ojaswini17 | 15 Feb, 2019, 09:09: PM
Expert Answer
Option A is correct.
 
Question: 

What is the single electrode potential of half-cell for zinc electrode dipping in 0.01 M ZnSO4 solution at 25 0C?

The standard electrode potential of Zn/Zn2+ is 0.0763 volt.

Given:

n = 2

E0oxid =0.763 V

We know that,

straight E subscript 0 subscript Oxi end subscript space equals space straight E subscript 0 subscript red end subscript space space minus space fraction numerator 0.0591 over denominator straight n end fraction log open square brackets Zn to the power of 2 plus end exponent close square brackets

space space space space space space space space space equals space 0.763 space minus space fraction numerator 0.0591 over denominator 2 end fraction log open square brackets 0.01 close square brackets

space space space space space space space space space equals space 0.763 space minus open parentheses negative 0.0591 close parentheses

space space space space space space space space space equals space 0.8221 space straight V

Electrode potential is 0.8221 V

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