When of a gaseous hydrocarbon

CHEMISTRY · Subjective · A Level · Chemistry · Alkanes · Alkanes

Problem

When

10\,\text{cm}^3

of a gaseous hydrocarbon, a compound containing only carbon and hydrogen, is burnt in excess oxygen, the products consist of

30\,\text{cm}^3

of carbon dioxide and

30\,\text{cm}^3

of water vapour, measured under the same conditions of temperature and pressure. Determine the molecular formula of the hydrocarbon.