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anzhelika [568]
3 years ago
14

The reaction X 2 (g) m 2 X(g) occurs in a closed reaction vessel at constant volume and temperature. Initially, the vessel conta

ins only X 2 at a pressure of 1.55 atm. After the reaction reaches equilibrium, the total pressure is 2.85 atm. What is the value of the equilibrium constant, Kp , for the reaction?
Chemistry
1 answer:
Nezavi [6.7K]3 years ago
3 0

Answer:

41.6 is the value of the equilibrium constant for the reaction.

Explanation:

           X_2\rightleftharpoons 2X

Initially   1.55            0

At eq'm  1.55-p        2p

Total pressure at the equilibrium = P =2.85 atm

P=(1.55-p)+2 p = 2.85 atm

p = 1.3 atm

Partial pressure of X_2 at equilibrium:

[p_{X_2}^o]=2p=2\time 1.3 atm=2.6 atm

Partial pressure of X at equilibrium;

[p_{X}^{o}]=1.55 atm -1.3 atm = 0.25 atm

The value of equilibrium constant will be given as:

K_p=\frac{[p_{X_2}^o]}{[p_{X}^{o}]^2}

K_p=\frac{2.6 atm}{(0.25 atm)^2}=41.6

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