When of a gaseous hydrocarbon is reacted with excess oxygen

CHEMISTRY · Subjective · CBSE · Chemistry · Some Basic Concepts of Chemistry · Some Basic Concepts of Chemistry

Problem

When

20\,\text{cm}^3

of a gaseous hydrocarbon is reacted with excess oxygen, the gaseous products consist of

80\,\text{cm}^3

of carbon dioxide,

\text{CO}_2

, and

80\,\text{cm}^3

of steam,

\text{H}_2\text{O}

, measured under the same conditions of pressure and temperature above

100\,^{\circ}\text{C}

. Deduce the molecular formula of the hydrocarbon.