An organic substance `(0.2115gm)` on complete combustion gave 0.4655 gm of carbon dioxide and 0.2533 gm of water. Determine the percentage composition of the compound.

Explanation

Mass of `CO_2` formed `=0.4655 gm`
mass of `H_2O` formed `=0.2533gm`
Mass of the organic substance taken `=0.2115gm`
percentage of carbon `=(12)/(44)xx("mass of "CO_2)/("mass of compound")xx100`
`=(12)/(44)xx(0.4655)/(0.2155)xx100=60.03`
percentage of hydrogen
`=(2)/(18)xx("mass of "H_2O)/("mass of compound")xx100`
`=(2)/(18)xx(0.2533)/(0.2155)xx100=13.30`
percentage of oxygen `=100-(60.3+13.30)=26.67`
Composition of the substance : `C=60.03%,H=13.30%,`
and `O=26.67%`