Pratyush took sulphur powder on a spatula and heated it. They collected the gas evolved by inverting a test tube over it, as shown in figure below. (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.

Pratyush took sulphur powder on a spatula and heated it. They collecte

1.	Pratyush took sulphur powder on a spatula and heated it. They collected the gas evolved by inverting a test tube over it, as shown in figure below. (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» Solution :(a) (i) No change in colour of LITMUS paper. (II) The colour of litmus paper will turn RED because sulphor is non-metal and the oxides of non-metal are acidic in nature. (b) `S+O_(2) RARR SO_(2)` `SO_(2) + H_(2)O rarr H_(2)O_(4)`