Question

The formation of $S{O}_2$ and $S{O}_3$ illustrates the law of:

• A. conservation of Mass
• B. definite proportions
• C. multiple proportions
• D. gaseous volumes

Answer 1

The correct option is C multiple proportions

Different proportions of oxygen in the various oxides of sulphur prove the law of multiple proportions.

This is because the ratio of masses of oxygen that combine with the same mass of sulphur (to form $S{O}_2$ and $S{O}_3$) is 2:3, a simple ratio.

Thus, the formation of $S{O}_2$ and $S{O}_3$ illustrates the law of multiple proportions.