Calculate EMF of the cell . given that: $$ E^0 (Sn^{2+} | Sn ) = -0.14 V $$
$$ An | Sn^{2+} (0.05 M ) || H^+ ( 0.02M ) | H_2 (1 atm), Pt $$

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Write the cell reaction and calculate the e.m.f. of the following cell at

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