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O KINETICS AND EQUILIBRIUM Using the general properties of equilibrium constants

ID: 707122 • Letter: O

Question

O KINETICS AND EQUILIBRIUM Using the general properties of equilibrium constants At a certain temperature, the equilibrium constant K for the following reaction is 1.3: NO)+COg)NOG)+ CO2(g) Use this information to complete the following table. Suppose a 18. L reaction vessel is filled with 0.81 mol of NO and 0.81 mol of CO2. What can you say about the composition of the mixture in the vessel at equilibrium? 0There will be very little NO and co. There will be very little NO and CO2. Neither of the above is true. What is the equilibrium constant for the following reaction? Round your answer to 2 significant digits NO(0)+CO2(0)NO,(0)+CO(o) What is the equilibrium constant for the following reaction? Round your answer to 2 significant digits 2 NO 2(9)+2CO(9)2 NO(g)+2CO2(9) Explanation Check 13

Explanation / Answer

1)

NO2(g) + CO(g) <- - - - - > NO(g) + CO2(g)

K = [NO] [CO2] /[NO2] [CO2] = 1.3

From the value of K we know that more product than reactant

Therefore, the answer is

Ther will be a very little NO2 and CO

2)

NO(g) + CO2(g) <-------> NO2(g) + CO(g)

K = 1/1.3 = 0.77

3)

2NO2(g) + 2CO(g) <------> 2NO(g) + 2CO2(g)

K = [NO]2[CO2]2/[NO2]2[CO]2

K =([NO] [CO2] /[NO2] [CO])2

   K = (1.3)2

K = 1.69