Question

$S{O}_2$ gas was prepared by
(i) burning sulphur in oxygen,
(ii) reacting sodium sulphite with dilute $H_{2}S{O}_4$ and
(iii) heating copper with $conc.H_{2}S{O}_4$. It was found that in each case sulphur and oxygen combined in the ratio of 1 : 1. The data illustrates the law of :

• A. conservation of mass
• B. multiple proportions
• C. constant proportions
• D. reciprocal proportions

Answer 1

The correct option is C constant proportions

Ratio of sulfur & oxygen $=1:1.$

Thus illustrates law of constant proportions because the ratio is a constant.