Question

2 gram ferrous sulphate crystals are heated in dry boiling tube first list any two observations second name the type of chemical reaction takes place and third write the chemical equation of the reaction

Answer 1

(1) (a) a poisonous gas emrges out from the test
tube.
(b) a bad smell come out from the test tube
(2) endothermic reaction
(3) FeSO4 - Fe2O3+SO2+SO3

Answer 2

Answer:

(i)  Two observations are :

(a) Change in state and colour.

(b) Evolution of gas.

(ii) Decomposition reaction.

(iii) 2FeSO4(s) +Heat → Fe2O3(s) + SO2(g) + SO3(g)