Chemistry

Chemistry

Problem

For the overall redox process in a galvanic cell,

\text{Cr}^{3+}+3\,e^- \rightarrow \text{Cr}(s) \quad (E^{\circ}=0.25\,\text{V}),

the reaction quotient at a certain moment is

Q = 15

. Calculate the cell potential at 330 K. (Use

R = 8.314\,\text{J mol}^{-1}\text{K}^{-1}

and

F = 9.65\times10^{4}\,\text{C mol}^{-1}

.) a)

0.24\,\text{V}

b)

0.22\,\text{V}

c)

0.28\,\text{V}

d)

0.18\,\text{V}

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