The haf reaction occuring in the standard hydrogen electrode\"SHE\" is
2H+ (aq) +2e- <=> H2 (g)
a) What is the EMF for this half-cell?
b) How is the EMF value listed in part (a) above for the standardydrogen electrode measured?
c) Why do we need a \"standard reference electrode\" like thishydrogen half-cell?
d) How is SHE used to determine unknown half-cell voltages?
