A sample of an unknown vaporized hydrocarbon burns completely in a bomb calorimeter…
CHEMISTRY · Multi-part · A Level · Chemistry · Amount of substance · Amount of substance
Problem
A 2.750g sample of an unknown vaporized hydrocarbon burns completely in a bomb calorimeter containing excess oxygen. After the reaction is complete and the gaseous products are returned to room temperature, 8.448g of CO2(g) and 3.456g of H2O(g) are collected. No other products are detected.
Answer the following.
(a) Determine the empirical formula of the hydrocarbon. Show all calculations, including conversion of product masses to moles of each element in the original compound.
(b) Write the balanced chemical equation for the complete combustion of one mole of the empirical-formula compound you obtained in part (a).
(c) Using your balanced equation from part (b), calculate the mass of O2(g) that reacted with the original 2.750g sample.