Question

A student wants to study a decomposition reaction by taking ferrous sulphate crystals write two precautions

Answer 1

. 1) Do not point the mouth of the boiling tube at your neighbours or yourself. 2) Waft gases emitted from ferrous sulphate on heating gently towards your nose holding the test tube at a distance.

Answer 2

(i) Take a dry boiling tube.

(ii) Keep mouth of test-tube away yourself