Chemistry

Problem

At 350 K, the standard cell potential for the reaction 4 Fe

^{2+}

(aq) + O

_2

(g) + 4 H

^{+}

(aq) → 4 Fe

^{3+}

(aq) + 2 H

_2

O(l) is

E^{\circ}=+0.08\,\text{V}

. The reaction involves

n=4

electrons. Using

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

and

F=9.6485\times10^{4}\,\text{C mol}^{-1}

, what is the value of

\log_{10}K

at 350 K? a)

10.6

5.4

4.6

-4.6