Topical Questions These questions are keyed to the major topics in the chapter. Usually...

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 K_c = 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.