Pratyush took a sulfur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it, as shown in the 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.

Asked by Vishal kumar | 1 year ago |  224

1 Answer

Solution :-

a) When sulphur powder is burnt in the air sulphur-di-oxide is formed.

(i) Sulphur-di-oxide does not have any effect on dry litmus paper.

(ii) Sulphur-di-oxide turn the moist litmus paper from blue to red as contact of SO2 with water turns to sulphurous acid.

(b) S(s) + O2(g) → SO2(g) SO2(g) + H2O →H2SO3

Answered by Shivani Kumari | 1 year ago

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