Answer: Determining an Empirical Formula by Combustion
Chapter , Problem 2PE(choose chapter or problem)
Problem 2PE
Determining an Empirical Formula by Combustion Analysis
Isopropyl alcohol, sold as rubbing alcohol, is composed of C, H, and 0. Combustion of 0.255 g of isopropyl alcohol produces 0.561 g of CO2 and 0.306 g of H2O. Determine the empirical formula of isopropyl alcohol.
(a) Caproic acid, responsible for the odor of dirty socks, is composed of C, H, and O atoms. Combustion of a 0.225-g sample of this compound produces 0.512 g CO2 and 0.209 g H2O. What is the empirical formula of caproic acid? (b) Caproic acid has a molar mass of 116 g/mol. What is its molecular formula?
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