composition by mass: C – 8.7 % ; F -13.8 %; Cl – 77.5 % Calculate the empirical formula of CFC11. b) CFC 12 has the molecular formula CF2Cl2. It can be made by the reaction of hydrogen fluoride , HF with tetrachloromethane, CCl4.. CCl4 + 2HF → CCl2F2 + 2HCl. What is the maximum mass of CFC 12 that can be made from 10.0 g of hydrogen fluoride?

Chemistry: The Molecular Science
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Chapter3: Chemical Reactions
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1. CFC s are compounds that contain only carbon, chlorine and fluorine. They are atmospheric pollutants and destroy ozone in the upper atmosphere.

a) CFC 11 has the following composition by mass: C – 8.7 % ; F -13.8 %; Cl – 77.5 % Calculate the empirical formula of CFC11.

b) CFC 12 has the molecular formula CF2Cl2. It can be made by the reaction of hydrogen fluoride , HF with tetrachloromethane, CCl4.. CCl4 + 2HF → CCl2F2 + 2HCl. What is the maximum mass of CFC 12 that can be made from 10.0 g of hydrogen fluoride?

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