( begin array l PL, H 2(~g) left(1 ~atm, 25^ circ C right) / H_ 2 SO_ 4 (aq) | CuSO_ 4 (aq) / Cu(s) E^ circ Cu / Cu^ 2+ =-0.34 ~V end array ) কোষটির প্রমাণ emf কত?

\begin{array}{l}\mathrm{PL}, \mathrm{H} 2(\mathrm{~g})\left(1 \mathrm{~atm}, 25^{\circ} \mathrm{C}\right) / \mathrm{H}_{2} \mathrm{SO}_{4}(\mathrm{aq}) \| \mathrm{CuSO}_{4}(\mathrm{aq}) / \mathrm{Cu}(\mathrm{s}) \\ \mathrm{E}^{\circ} \mathrm{Cu} / \mathrm{Cu}^{2+}=-0.34 \mathrm{~V}\end{array}

SB 23