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QNEET-2013-Ch-1482: NEET 2013 Chemistry - Class 12 NEET-2013-Ch-1482 Solution: A hydrogen gas electrode is made by dipping platinum wire in a…
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 0.118 V 1.18 V 0.059 V 0.59 V
Multiple Choice Options
- A 0.118 V
- B 1.18 V
- C 0.059 V
- D 0.59 V
Step-by-Step Verified Solution
Oxidation half reaction is
H 2 _ 2H + + 2e �
If pH = 10, [H + ] = 10 �10
We know, Nernst Equation
E cell = E� cell - 0.0591 2 log _ [ H + ] 2 P H 2
For hydrogen electrode E� cell = 0
E cell = - 0.0591 2 log _ ( 10 _ 10 ) 2 1
= 0.0591log10 10
E cell = 0.591 V