First slide

Standard EMF of a cell

Question

The potential of standard hydrogen electrode is zero. This implies that

Easy

A

$\large \Delta G_f^0\left( {{H^ + },\,aq} \right)\, = \,0$
B

$\Delta H_f^0\left( {{H^ + },\,aq} \right)\, = \,0$
C

$\Delta G_f^0\left( {{H^ + },\,aq} \right)\, < \,0$
D

$\Delta G_f^0\left( {{H^ + },\,aq} \right)\, > \,0$

Solution

Standard Gibbs energy for formation of H⁺ in aqueous solution is zero
Alternatively
$\Delta G^{o} = - nF{E}$
since E = 0 ΔG^o =0

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