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Question

A 999.6 mg sample of a pure organic compound containing chlorine is fused with Na2O2 to convert chlorine to NaCl. The sample is then dissolved in water, and the chloride precipitated with AgNO3, giving 1951.6 mg of AgCl. If the molecular weight of organic compound is 147 u, how many chlorine atoms does each molecule contain?

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Solution

Moles of AgCl = moles of chloride (Cl)
=1.9516143.5
Moles of organic compound
=0.9996147
Chlorine atoms in each molecule of organic compound
=1.9516143.50.9996147=2

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