What happens when an acid reacts with a metal oxide? Explain with the help of an example. Write a balanced equation for the reaction involved.

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Solution

$M e t a l o x i d e + A c i d ⟶ A s a l t + W a t e r$

Some examples of reactions between acids and metal oxides are copper oxide with hydrochloric acid and the combination of copper oxide with nitric acid.

In the first reaction, the copper oxide reacts with hydrochloric acid to produce copper chloride and water.

$C u O (s) + 2 H C l (a q) ⟶ C u C l_{2} (a q) + H_{2} O (l)$

The reaction between copper oxide and nitric acid forms copper nitrate and water.

$C u O + 2 H N O_{3} ⟶ C u (N O_{3})_{2} + H_{2} O$

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