Question

Give one example each of a chemical reaction showing the following characteristics:

Change of state from liquid to gas.

Answer 1

• When an electric current is passed through the acidic water molecule it breaks down to form hydrogen gas and oxygen gas. This reaction is known as electrolysis.
• In this reaction, the liquid reactant is converted to a gaseous product.

$\underset{\mathrm{water}}{2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\stackrel{\mathrm{electric}\mathrm{current}}{\to }2\underset{\mathrm{hydrogen}}{{\mathrm{H}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}$