Answer to Question #177077 in Inorganic Chemistry for dsad

Question #177077

3) 2A(g)+B(g)⇄2C(g) 

Each with a concentration of 0.0100M . The following table shows the concentrations of the gases at equilibrium at a particular temperature.

[A]eq --> 0.01800

[B]eq-> 01400

[C]eq--> .0020

If the experiment is repeated at a higher temperature at which Kc is smaller, which of the following best describes the effect of the temperature change on the concentrations of the gases at equilibrium?

A)There will be a decrease in [A]eq that will be two times the decrease in [B]eq because A and B react in a 2-to-1 ratio.

B) [A]eq and [B]eq will remain constant, but [C]eq will increase because Kc decreased.

C) [A]eq , [B]eq , and [C]eq will all increase because Kc decreased.

D)There will be a increase in [A]eq that will be two times the decrease in [B]eq because A and B react in a 2-to-1 ratio.



1
Expert's answer
2021-03-31T08:05:08-0400

If Kc got smaller, then the equilibrium must shift to the reagents. This means that C will decrease and both A and B will increase. The increase in A would be two times the increase of B because they react in 2-to-1-ratio. None of the above answers are right.

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