PARAGRAPH : The standard cell potential for the Daniel cell,\ $\mathrm{Zn}(\mathrm{s})+\mathrm{Cu}^

Question

PARAGRAPH : The standard cell potential for the Daniel cell,\ $\mathrm{Zn}(\mathrm{s})+\mathrm{Cu}^{2+}(\mathrm{aq}) ightarrow \mathrm{Zn}^{2+}(\mathrm{aq})+\mathrm{Cu}(\mathrm{s})$\ is +1.102 V at 298 K and +1.095 V at 363 K . Use this for qns 74,75\ The temperature coefficient of emf is\

Professor PC Thomas Classes · Answer

Temp. coef. of emf $=\frac{d E}{d T}=\frac{E_{2}-E_{1}}{T_{2}-T_{1}}$\ $=\frac{1.095-1.102}{363-298}=\frac{-0.007}{65}=\frac{-70 	imes 10^{-4}}{65}=1.1 	imes 10^{-4}$.