Electrochemistry - Result Question 32
####34. A hydrogen gas electrode is made by dipping platinum wire in a solution of $HCl$ of $pH=10$ and by passing hydrogen gas around the platinum wire at one atm pressure. The oxidation potential of electrode would be ?
[NEET 2013]
(a) $0.59 V$
(b) $0.118 V$
(c) $1.18 V$
(d) $0.059 V$
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Solution:
- (a) $H_2 \longrightarrow 2 H^{+}+2 e^{-}$
$1 atm \quad 10^{-10}$
$E _{H_2 / H^{+}}=0-\frac{0.059}{2} \log \frac{(10^{-10})^{2}}{1}$
$E _{H_2 / H^{+}}=+0.59 V$
