Use the standard reduction potentials; Sn2+(aq) + 2e– → Sn(s) E˚ = -0.141 V Ag+(aq) + e– → Ag(s) E˚ — Electrochemistry Chemistry Question

Use the standard reduction potentials;
Sn²⁺(aq) + 2e– → Sn(s) E˚ = -0.141 V
Ag⁺(aq) + e– → Ag(s) E˚ = 0.800 V
to calculate E˚ for the reaction;
Sn(s) + ²Ag⁺(aq) → Sn²⁺(aq) + ²Ag(s)