Question

The products obtained when a metal oxide reacts with an acid are:

• A. salt and water
• B. metal hydroxide and hydrogen gas
• C. salt and hydrogen gas
• D. metal hydroxide and water

Answer 1

The correct option is A salt and water

Metal oxides are basic in nature. They react with an acid to form their respective salt and water.

For example, magnesium oxide reacts with hydrochloric acid to form magnesium chloride and water. The reaction involved is given below:

$\mathrm{MgO}\left(s\right)+2\mathrm{HCl}\left(\mathrm{aq}\right)\to {\mathrm{MgCl}}_2\left(\mathrm{aq}\right)+H_{2}O\left(l\right)$