Concerning the reaction in Exercise 51, if KO₂(s) and K₂CO₃(s) are maintained in contact with air at 1.00 atm and 25 °C, in which direction will a net change occur to establish equilibrium? Explain.

Exercise 51

The following reaction is used in some self-contained breathing devices as a source of O₂(g).

Suppose that a sample of CO₂(g) is added to an evacuated flask containing KO₂(s) and equilibrium is established. If the equilibrium partial pressure of CO₂(g) is found to be 0.0721 atm, what are the equilibrium partial pressure of O₂(g) and the total gas pressure?

Transcribed Image Text:

4 KO2(s) + 2 CO2(g) 2 K₂CO3(s) + 3 O2(g) Kp = 28.5 at 25 °C (for pressures in atmospheres)