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.
Consider the equilibrium
At 745 K the equilibrium constant Kc = 50.0. Suppose that 0.75 mol HI(g), 0.025 mol H2(g), and 0.025 mol I2(g) are placed into a sealed 20.0-L flask and heated to 745 K.
(a) Is the system at equilibrium?
(b) If not, in which direction must the reaction proceed to reach equilibrium?
(c) Calculate the equilibrium concentrations of all three substances.
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