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 2300 K the equilibrium constant Kc = 1.7 × 10-3. Suppose that 0.015 mol NO(g), 0.25 mol N2(g), and 0.25 mol O2(g) are placed into a 10.0-L flask, sealed, and heated to 2300 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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