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1. The equilbrium constant for the water-gas shift reaction is 5.0 at 400 o C: C

ID: 820576 • Letter: 1

Question

1. The equilbrium constant for the water-gas shift reaction is 5.0 at 400 oC:


CO(g) + H2O(g) ? CO2(g) + H2(g)

Determine Qc if the following amounts (in moles) of each component is placed in a 1.0 L container.

CO 0.79
H2O 0.24
CO2 1.00
H2 0.82


2. The equilbrium constant for the following reaction is 0.16 M0.5 at 3000 K:

CO2(g) ? CO(g) + 0.5O2(g)

Determine Qc if the following amounts (in moles) of each component is placed in a 3.00 L container.

CO2 0.920
CO 0.630
O2 0.240

Give answer to 3 decimal places.

Explanation / Answer

1)Qc = 1*0.82/(0.79)* (0.24)

           = 4.324

2) Qc = [(0.63/3)(0.24/3)^1/2] /( 0.924/3)

          = 0.193 (moles/liter)^1/2