a) Draw labelled diagram of Standard Hydrogen Electrode ( SHE ).
Write its half cell reaction of Eo value.
b) Calculate △rG⊝ for the following reaction :
Fe+2(aq)+Ag+(aq)→Fe+3(aq)+Ag(s).
(Given : E0Cell=+0.03V,F=96500C).
a) The labelled diagram of Standard Hydrogen Electrode ( SHE ) is as shown.
Half cell reaction for SHE
2H+(aq)+2e−→H2(g)↑
b)
△rG⊝=−nFE0Cell=−1×96500×0.03V=−2895J/mol=2.9kJ/mol