CHM 2046C Module 10 Sample Exam

Part F. Calculation Equilibrium Concentrations from Initial Concentrations based on K_c 10 points

At 25^oC, K_c=0.090 for the reaction:

H₂O (g) + Cl₂O (g) ç è 2 HOCl (g)

Calculate the concentration of all species if 2.0 mole of pure H₂O and 2.0 mole of pure Cl₂O are placed in a 2.0 L flask and the system is allowed to come to equilibrium.

McMurry 5^th: Reference Section 13.5 pages 511-516. Look at worked example 13.9 page 513 and 13.10 page 514. Read the steps in Figure 13.6:

Kotz 6^th Reference section 16.4 p 772-777 See Example 16.5 p771 using K_c without a quadratic equation to solve and 16.6 using K_c and needing the quadratic expression. Try Exercise 16.6 p774 for the first type and Exercise 16.7 p777 for the second type; then go to the end of the chapter on page 790-791 and try #13-#18. The Solutions manual for these exercises have been distributed.