A galvanic cell operates via the half-reaction Cu ^ 2+ +2 ,e^- Cu (s) (E^ =0.34 , V )

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

Problem

A galvanic cell operates via the half-reaction

\text{Cu}^{2+}+2\,e^-\rightarrow\text{Cu}(s) \quad (E^{\circ}=0.34\,\text{V}).

At 37 °C the ion concentrations give a reaction quotient

Q = 0.050

. What is the cell potential at this temperature? (Use

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

and

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

.) (a)

0.34\,\text{V}

(b)

0.42\,\text{V}

(c)

0.38\,\text{V}

(d)

0.30\,\text{V}