5 mL of a gaseous hydrocarbon was exposed to 30 mL of
CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance
Problem
5 mL of a gaseous hydrocarbon was exposed to 30 mL of O2. The resultant gas, on cooling is found to measure 25 mL of which 10 mL are absorbed by NaOH and the remainder by pyrogallol. Determine molecular formula of hydrocarbon. All measurements are made at constant pressure and temperature.