Question

The standard reduction potential values of three metallic cations, X, Y, Z are 0.52, −3.03 and −1.18 V respectively. The order of reducing power of the corresponding metals is ______.

Options

• Y > Z > X

• X > Y > Z

• Z > Y > X

• Z > X > Y

Answer 1

The standard reduction potential values of three metallic cations, X, Y, Z are 0.52, −3.03 and −1.18 V respectively. The order of reducing power of the corresponding metals is Y > Z > X.

Explanation:

Reducing power increases as the standard reduction potential becomes more negative because such metals lose electrons more readily. So −3.03 V > +0.52 V > −1.18 V, i.e., Y > Z > X.