Question

A gas X at 1 atm is bubbled through a solution containing a mixture of 1 M $Y^{\ominus }$ and 1 M $Z^{\ominus }$ at ${25}^{\circ }C$. If the reduction potential is Z > Y > X, then :

• A. Y will oxidize X only
• B. Y will oxidize Z only
• C. Z will oxidize X and Y
• D. Z will reduce both X and Y

Answer 1

Answer: (A), (C)

The correct options are
A Y will oxidize X only
C Z will oxidize X and Y

$E_Z^{\ominus }$ is highest $\Rightarrow$ Strongest oxidizing agent.

$E_X^{\ominus }$ is lowest $\Rightarrow$ Weakest oxidizing agent.

So, Y will oxidize X but not Z.

Also, Z will oxidize both X and Y since reduction potential of Z is highest among X, Y and Z.