Question

Write the chemical equation to represent the reaction taking place when copper oxide is heated in a stream of hydrogen.

Answer 1

Copper oxide- CuO
Hydrogen-H2
When copper oxide is heated in stream of hydrogen.
CuO + H2 → Cu + H2O
This reaction is displacement reaction. The element H2 is being oxidised and CuO is reduced.

Answer 2

Chemical equation for the reaction of copper oxide heated with stream of hydrogen:

Copper oxide – CuO

Hydrogen – $H_{2}$

$\Delta$ - Refers to heating

The chemical reaction is: $C u O+H_{2} \stackrel{\Delta}{\rightarrow} C u+H_{2} O$

In the above reaction, copper oxide loses an oxygen molecule and gets reduced as Copper metal (Cu), whereas the hydrogen element gets oxidized by the addition of the oxygen which was released by the copper oxide due to heating.