Given that at 25°C,
Cr³⁺(aq) + e⁻ → Cr²⁺(aq), E° = -0.424 V
Cr²⁺(aq) + 2e⁻ → Cr(s), E° = -0.900 V
Calculate the following:
E° at 25°C for Cr³⁺(aq) + 3e⁻ → Cr(s)
A. -0.74 V
B. +0.74 V
C. -1.324 V
D. -0.476 V