What do observe when the following substances are heated strongly?
(i) Iron(II)sulphate crystals
(ii)Lead nitrate crystals

Asked by Jaydip | 31st May, 2017, 10:23: AM

Expert Answer:

(i)On heating ferrous sulphate crystals, they lose water to form anhydrous ferrous sulphate (FeSO4) with a colour change from light green to white.Anhydrous ferrous sulphate on heating further decomposes to form ferric oxide (Fe2O3), sulphur dioxide (SO2) and sulphur trioxide (SO3).
(ii)On heating lead(II) nitrate crystals, they  decompose to give lead(II) oxide, oxygen and nitrogen dioxide.

Answered by Vaibhav Chavan | 31st May, 2017, 10:58: AM