Question

Account for the following :
"Ferrous sulphate crystals are heated. "
a.List any two observations.
b. Name the type of chemical reaction taking place.
c.Write the chemical equation for the reaction.

Answer 1

Answer:

a)they turn from green to white

  they lose their water of crystallization

b)decomposition reaction

c)FeSO4 .7H2O---------->FeSO4 + 7H20

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)