A Voltaic Cell Consists of an Au/Au³⁺ Electrode (E° =

A voltaic cell consists of an Au/Au³⁺ electrode (E° = 1.50 V) and a Cu/Cu²⁺ electrode (E° = 0.34 V) . Calculate [Au³⁺] if [Cu²⁺] = 1.20 M and E_cell = 1.13 V at 25°C.

A) 0.001 M
B) 0.002 M
C) 0.01 M
D) 0.02 M
E) 0.04 M