Question #cde21
1 Answer
Feb 7, 2017
It's arbitrary. We could have set it to be
There are other reference electrodes, a common one being the saturated calomel electrode (SCE):
#"Hg"_2^(2+)(aq) + 2e^(-) rightleftharpoons 2"Hg"(l)#
In reference to that, all reduction potentials will differ; its reduction potential is
If we use the SCE as a reference, we decrease numbers previously relative to the SHE by