Question

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

Answer 1

Acids react with metals to form hydrogen gas and the respective metal salt. Iron and dilute sulphuric acid react as follows:

$\text{Iron}+\text{dil. Sulphuric acid}\to \text{Iron sulphate}+\text{Hydrogen}$

Hydrogen gas is evolved in this reaction. When hydrogen gas is ignited with a burning matchstick, it puts out the fire with a 'pop' sound.