Question

3. Two different compounds are formed by the elements carbon and oxygen. The first compound contains 42.9% by mass carbon and 57.1% by mass oxygen. The second compound contains 27.3% by mass carbon and 72.7% by mass oxygen. Show that the data are consistent with the law of multiple proportions.​

Answer 1

The simplest whole number ratio of percentage of elements will be same according to law of multiple proportions.

Compound -1

• Carbon=42.9%
• Oxygen=57.1%

ratio:-

`\\ \sf\longmapsto (57.1)/(42.9)=1.33`

Compound-2

• Carbon=27.3%
• Oxygen=72.7%

ratio

`\\ \sf\longmapsto (72.7)/(27.3)=2.66`

Now compound ratio:-

`\\ \sf\longmapsto (2.66)/(1.33)=2`

Hence verified