The temperature coefficient

CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

The temperature coefficient, of the emf i.e.

\frac{dE}{dT} = -0.00065\text{ volt. deg}^{-1}

for the cell

\text{Cd} | \text{CdCl}_2(1\text{M}) || \text{AgCl}(\text{s}) | \text{Ag}

25^\circ\text{C}

. Calculate the entropy change

\Delta S_{298\text{K}}

for the cell reaction,

\text{Cd} + 2\text{AgCl} \longrightarrow \text{Cd}^{2+} + 2\text{Cl}^- + 2\text{Ag}

(a)

-105.5\text{ JK}^{-1}

(b)

-150.2\text{ JK}^{-1}

(c)

-75.7\text{ JK}^{-1}

(d)

-125.5\text{ JK}^{-1}