JEE Main 2019 Chemistry question
The standard electrode potential E° and its temperature coefficient for a cell are 2 V and VK at 300 K respectively. The cell reaction is Zn(s) + Cu(aq) → Zn(aq) + Cu(s). The standard reaction enthalpy () at 300 K in kJ mol is, [Use R = 8 JK mol and F = 96,000 C mol]
Answer: (A)
Solution
ΔG° = −384 kJ; ΔS° = nF(dE°/dT) = −96 J K; ΔH° = −384 − 28.8 = −412.8 kJ.