Question

A student heats 2g of ferrous sulphate crystal in a dry boiling tube and observe that reddish brown solid is left Behind and a smell of burning sulphur is experienced :A= identify the type of chemical reaction. B=write a chemical equation to represent the above change.

Answer 1

The Chemical reaction that took place was decomposition reaction.

$2 FeSO4(s) → Fe2O3(s) + SO2(g) + SO3(g)$

Answer 2

Hii mate,

● Answer -
A) Type of reaction => Decomposition reaction
B) Chemical eqn => 2FeSO4 → Fe2O3 + SO2 + SO3

● Explanation -
- When anhydrous ferrous sulphate crystals are heated in a test tube, it decomposes to ferric oxide, sulphur dioxide and sulphur trioxide.
2FeSO4 → Fe2O3 + SO2 + SO3

- Brown reddish solid left behind is ferric oxide (Fe2O3).
- Smell of burning sulphur is due to SO2 & SO3 gases.


Hope this helps you...