What is the standard reduction potential of a standard hydrogen electrode?

1 Answer
Truong-Son N.
Dec 1, 2015

Think about it; you use the standard reduction potential for the standard hydrogen electrode as a reference standard. i.e. another standard reduction potential is in reference to that of the standard hydrogen electrode. So it must be #"0 V"#.

#2H^(+)(aq) + 2e^(-) -> H_2(g)#

CHALLENGE: The saturated calomel electrode is another commonly-used reference electrode, with a standard reduction potential of #"0.2444 V"# relative to the standard hydrogen electrode. Convert one standard reduction potential of your choice to be in reference to the saturated calomel electrode.

#Hg_2^(2+) + 2Cl^(-) -> Hg_2Cl_2(s)#

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