A 0.500 g sample of a gaseous compound that contains only carbon and hydrogen is…
CHEMISTRY · Multi-part · A Level · Chemistry · Amount of substance · Amount of substance
Problem
A 0.500 g sample of a gaseous compound that contains only carbon and hydrogen is burned completely in excess oxygen. The combustion produces 1.54 g of CO₂(g) and 0.630 g of H₂O(g). Assume complete transfer of carbon to CO₂ and hydrogen to H₂O.
(a) Calculate the number of moles of carbon atoms present in the original sample.
(b) Calculate the number of moles of hydrogen atoms present in the original sample.
(c) Determine the empirical formula of the unknown hydrocarbon. Clearly indicate how the mole ratios lead to the final formula.