CHM 1311 Study Guide - Joule, Redox, Fluorine
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An organic compound was found to contain only c, h, and cl. When a 1. 499 g sample of the compound was completely combusted in air, 2. 06 l of co2 (g) was collected over water at 25 c and 700 mm hg. In a separate experiment the chlorine in a. 1. 00 g sample of the compound was converted to 1. 414 g of agcl. Determine the empirical formula of the compound. (vapour pressure of water at 25 c is 23. 76 torr). For c: n = pv/rt = 0. 07495 moles co2 = 0. 07495 moles of c. 0. 07495 moles c x 12. 01 g c/mol = 0. 9001 g c in the sample or 0. 9001/1. 499 g sample. 1. 414 g agcl x 1mol/143. 32 g agcl = 0. 009866 moles agcl = 0. 009866 mol cl. 0. 009866 mol cl x 35. 45 gcl/mol = 0. 34976 g of cl in the sample or 0. 34976 gcl/1. 00 g sample = 0. 3498 = 34. 98%