Question

3
27
Rani took sulphur powder on a spatula and heated it. She collected the gas
evolved by inverting a test tube over it, as shown in figure below.
Test cube
Spatula containing
sulphur powder
Buang
(a) What will be the action of gas on
(i) Dry litmus paper?
(ii) Moist litmus paper?
(b) Write a balanced chemical equation for the reaction taking place.​

Answer 1

Answer:

(a) (i) No effect

(ii) Moist blue litmus will turn red

(b) S + O2 --- SO2

SO2 + H2O ---- H2SO3

Sulphurous Acid turns blue litmus red