Question

The \( E^\circ \) values for \( \text{Cr}^{3+/2+} \), \( \text{Mn}^{3+/2+} \), \( \text{Fe}^{3+/2+} \), and \( \text{Co}^{3+/2+} \) are -0.41, +1.57, +0.77, and +1.97 V respectively. For which of these metals, the change in oxidation state from +2 to +3 is the easiest?

• A. Fe
• B. Mn
• C. Cr
• D. Co

Hint:

When determining which metal is easiest to oxidize, look for the metal with the lowest \( E^\circ \) value, as this indicates the greatest tendency to lose electrons.

Answer 1

The Correct Option is C