Question

Standard electrode potential of three metals X, Y and Z are –1.2 V, +0.5 V and –3.0 V, respectively. The reducing power of these metals will be ______.

Options

• Y > Z > X

• X > Y > Z

• Z > X > Y

• Z > X > Y

• Y > X > Z

Answer 1

Standard electrode potential of three metals X, Y and Z are –1.2 V, +0.5 V and –3.0 V, respectively. The reducing power of these metals will be Z > X > Y.

Explanation:

As the value of standard reduction potential decreases, the reducing power increases, i.e., –3.0 V > –1.2 V > +0.5 V.

∴ Z > X > Y