Arun heated 2 g of ferrous sulphate crystals in a dry boiling tube. 

(a) Mention two changes he observed while heating. 

(b) What kind of chemical reaction is occurring? 

(c) Identify the products formed in this reaction with the help of a balanced chemical equation.

(a)When ferrous sulphate crystals are heated, the following two observations occur: 

(i) A change in the state of color occurs.

(ii) during the process, a gas is generated. 

(b) The reaction is a decomposition reaction since the compound decomposes into two or more substances. 

(c) The chemical reaction is as follows;

$2FeS{O}_4\left(s\right)+Heat\to F{e}_2{O}_3\left(s\right)+S{O}_2\left(g\right)+S{O}_3\left(g\right)$