Question

What happens when dilute hydrochloric acid is added to iron fillings? Choose the correct answer.

Options

• Hydrogen gas and iron chloride are produced.

• Chlorine gas and iron hydroxide are produced.

• No reaction takes place.

• Iron salt and water are produced.

Answer 1

Hydrogen gas and iron chloride are produced.

Explanation:

The chlorine from the hydrogen chloride is displaced into the iron fillings, undergoing the following reaction:

\[\ce{Fe_{(s)} + 2HCl(dil{.}) -> FeCl2_{(aq)} + H2_{(g)}}\]