NCERT Class XII Chemistry
Chapter - Electrochemistry
Questions with Solutions
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Question : 22
Total: 32
Calculate the potential of hydrogen electrode in contact with a solution whose pH is 10.
Solution:
For hydrogen electrode, H + + e − – – – – – – ▶
H 2
From Nernst equation,
E H + ∕ H 2 = E ° H + ∕ H 2 −
log
= 0 −
log
= – 0.0591 × 10 = – 0.591 V
From Nernst equation,
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