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We could also write this reaction three other ways, listed below. The equilibriu

ID: 1020645 • Letter: W

Question


We could also write this reaction three other ways, listed below. The equilibrium constants for all of the reactions are related. Write the equilibrium constant for each new reaction in terms of K, the equilibrium constant for the reaction above.


Consider the reaction:
P(s) + 3/2 Cl2(g) PCl3(g)

Write the equilibrium constant for this reaction in terms of the equilibrium constants, Ka and Kb, for reactions a and b below:

a.) P(s) + 5/2 Cl2(g) PCl5(g) Ka
b.) PCl3(g) + Cl2(g) PCl5(g) Kb

K=

Dinitrogen tetraoxide, a colorless gas, exists in equilibrium with nitrogen dioxide, a reddish brown gas.


One way to represent this equilibrium is:
2NO2(g)N2O4(g)

Explanation / Answer

For N2O4,

K = [N2O4]/[NO2]^2

1) K1 = sq.rt.(K)

2) K2 = 1/K

3) K3 = 1/sq.rt.(K)

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For the given reaction,

K = Ka/(Kb)^2

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