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.
Phosphorus pentachloride decomposes at high temperatures.
An equilibrium mixture at some temperature consists of 3.120 g PCl5, 3.845 g PCl3, and 1.787 g Cl2 in a sealed 1.00-L flask.
(a) If you add 1.418 g Cl2 without changing the volume, how will the equilibrium be affected?
(b) What will the concentrations of PCl5, PCl3, and Cl2 be when equilibrium is reestablished?
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