Question

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

• A. $Y$ will oxidise $X$ and not $Z$
• B. $Y$ will oxidise $Z$ and not $X$
• C. $Y$ will oxidise both $Z$ and $X$
• D. $Y$ will oxidise both $X$ and $Z$

Answer 1

Answer: (A)

$Y$ will oxidise $X$ and not $Z$

$\to Z$ has more reduction potential than $Y$. Hence, will get reduced by gaining electrons.

$\to$ Gas $X$ has less reduction potential than $Y$. So, $Y$ will oxidize $X$.

$\to Y$ will act as reducing agent for $Z$ and oxidizing agent for $X$. Hence, it will oxidize $X$ and not $Z$.