Question

What are the conditions to measure the standard reduction potential of metals against SHE?

(a) 2 atm pressure, 25°C temperature, 2M concentration of H^+

(b) 2 atm pressure, 25°C temperature, 1M concentration of H^+

(c) 1 atm pressure, 25°C temperature, 1M concentration of H^+

(d) 1 atm pressure, 25°C temperature, 2M concentration of H^+

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Answer 1

Right choice is (c) 1 atm pressure, 25°C temperature, 1M concentration of H^+

Explanation: The conditions to measure the standard reduction potential of metal electrodes against standard hydrogen electrode (SHE) are 1 atmospheric pressure, 25°C temperature and 1 molarity concentration of H^+ ions.