Question

Loss of ____ is called reduction (oxygen/ electron)

Answer 1

1. Reduction

Either the loss of oxygen or the addition of hydrogen in a reaction is called reduction. In reduction, the element or the molecule gains one or more electrons.

2. Example of reduction:

In the reaction of Copper oxide with hydrogen, copper undergoes reduction and forms water.

$$\begin{gathered} \mathrm{CuO}\left(\mathrm{s}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right)\to \mathrm{Cu}\left(\mathrm{s}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right) \\ \mathrm{Copper}\mathrm{oxide}\mathrm{Hydrogen}\mathrm{Copper}\mathrm{Water} \end{gathered}$$

In the above reaction, oxygen is lost from copper.

Hence, the loss of oxygen is called reduction.