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calculate the e.m.f (in V) of the cell: ...

calculate the e.m.f (in V) of the cell:
`Pt|H_2(g)|BOH(Aq)"||"HA(Aq)|H_2(g)|Pt`,
0.1bar 1M 0.1M 1bar
Given : `K_a(HA)=10^(-7), K_b(BOH)=10^(-6)`

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