An Electrochemical Cell Based on the Following Reaction Has a Standard

Multiple Choice

An electrochemical cell based on the following reaction has a standard cell voltage (E ^$\circ$ _cell) of 0.48 V: Sn(s) + Cu²⁺(aq) $\rarr$ Sn²⁺(aq) + Cu(s)
What is the standard reduction potential of tin(II)
(E ^$\circ$ (Cu²⁺/Cu) = 0.34 V)

A) -0.14 V
B) 0.14 V
C) -0.82 V
D) 0.82 V
E) none of these