Question

Write the chemical equation of the reaction which takes place when iron reacts with dilute sulphuric acid. What happens when the gas produced is ignited with a burning matchstick?

Answer 1

Acids react with metals to form hydrogen gas and the respective salt. [0.5 Marks]

Iron and dilute $H_2{SO}_4$ react as follows:

$\text{Fe(s)}+{\text{H}}_2{SO}_4\text{(dil)}\to +{\text{FeSO}}_4\text{(aq)}+{\text{H}}_2\text{(g)}$ [1 Marks]

Hydrogen gas is evolved in this reaction. [0.5 Marks]

When hydrogen gas is ignited with a burning matchstick, it puts out the fire with a 'pop' sound. [1 Marks]