Answer to Question #263807 in Organic Chemistry for Icey

Question

1. In this example we are given the partial pressure of each gas in the mixture.

2 SO 2 (g) + O 2 (g) <-> 2SO 3 (g)

The equilibrium partial pressure at constant temperature are SO 2 = 10 6 Pa, SO 3 = 8 x10 6 Pa, O 2 = 7 x 10 6 Pa. Calculate the value of Kp and its unit in Pa.

2. The equilibrium between three substances, A, B and C is shown below

A(g) + B(g) <-> C (g)

Initially there were 0/1 mol A and 0.2 mol of B in the reaction mixture. A and B reacted

together to produce an equilibrium mixture containing 0.04 mol of C. The total volume

of the mixture is 2 dm3.

a. Construct ICE table and complete it

b. Calculate the value of Kc and its unit

4. When 1 mol of N2O4 gas is allowed to come to equilibrium with NO2 gas under standard

conditions, only 20% of the N2O4 is dissociated.

N 2 O 4 (g) <-> 2 NO 2 (g)

Calculate the value of Kv . Assume the volume of the system is 1 dm3.

Answer 1

10×10⁶×7×10⁶/8×10⁶

Kp= 70×10⁶/8

Kp= 8.75×10⁶