Topical Questions
These questions are keyed to the major topics in the chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.
The freezing point of p-dichlorobenzene is 53.1 °C, and its Kf is 7.10 °C kg mol-1. A solution of 1.52 g of the drug sulphanilamide in 10.0 g p-dichlorobenzene freezes at 46.7 °C. Calculate the molar mass of sulfanilamide.
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