What is the colour of ferrous sulphate in the given chemical reaction?

​$$2FeSO_4(s) \rightarrow Fe_2O_3(s) + SO_2(g) + SO_3(g)$$​​

Correct option is D

Ferrous sulphate (FeSO₄) is a crystalline solid with a pale green color. When ferrous sulphate is heated, it decomposes into ferric oxide (Fe₂O₃), which is a reddish-brown solid, and gases like sulfur dioxide (SO₂) and sulfur trioxide (SO₃) are released.

At the start of the reaction, the pale green color of ferrous sulphate is observed, and upon decomposition, it changes due to the formation of ferric oxide.

Information Booster

• The decomposition of ferrous sulphate occurs at high temperatures and involves a change in oxidation state from Fe²⁺ to Fe³⁺.
• Fe₂O₃ (ferric oxide) is commonly known as rust and has a reddish-brown color.
• This reaction is an example of thermal decomposition, where a single compound breaks down into simpler compounds upon heating.