Question

CaO is treated with H2O Ca(OH)2 is formed it's redox reaction or not

Answer 1

yeah it is redox reaction

Answer 2

Answer:

Yes, it is a redox reaction.

Explanation:

When, CaO is treated with $\mathrm{H}_{2} \mathrm{O}, \mathrm{Ca}(\mathrm{OH})_{2}$ is formed.

The reaction can be stated as:

$\mathrm{CaO}+\mathrm{H}_{2} \mathrm{O} \rightarrow \ \mathrm{Ca}(\mathrm{OH})_{2}$

In this reaction, we see the exchange of electrons between O and H which lead to an exchange of charge among them, which is as follows:

$\mathrm{Ca}^{2+}=\mathrm{Ca}^{2+}$ (no change)

$\mathrm{O}^{2-}+1 \mathrm{e}^{-}=\mathrm{O}^{1-}$ (oxidation)

$\mathrm{H}^{1+}-2 \mathrm{e}^{-}=\mathrm{H}^{1-}$ (reduction)

Oxygen accepts 1 electron to become O-, thus getting Oxidized.

Hydrogen gives up 2 electrons to become H-, thus getting Reduced.

Hence it is a Redox Reaction.