Question

The single electrode potential of zinc electrode when zinc rod in dipped in 0.1m Znso4

Answer 1

ANSWER

CONCEPT

standered electrode potential of zinc with respect to hydrogen is -0.76 ev

concentration of solids taken as unity

SOLUTION

According to nearst equation electrode potential

for a reaction

aA+bB -------> cC+dD

when standered conditions is changed is given by

$E \: = {E}^{o} \: - \frac{0.6 log_{10} \: \frac{ {c}^{c} \times {d}^{d} }{ {a}^{a} \times {b}^{b} } }{n}$

n is number of ecectrons gain or lose

reaction

Zn^(+2) + 2 e -------> Zn(s)

n = 2

concentration of solids taken as unity

and

concentration of product is 0.1 m

E = -0. 76 -0. 6 log(1/0.1) /2

= -1. 06 ev