Question

A hydrogen gas electrode is made by dipping platinum wire in a solution of HCI of pH = 10 and by passing hydrogen gas around the platinum wire at one atm pressure. The oxidation potential of electrode would be?

• A. 0.59 V
• B. 0.118 V
• C. 1.18 V
• D. 0.059 V

Answer 1

Answer: (A)

0.59 V

$pH=10$

$-\log \left[H^{+}\right]=10$

$E_{cell}=-\frac{0.059}{1}\log \left[H^{+}\right]$

$=\frac{0.059}{1}\times 10=0.59v$