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Effect on Kc

Given the rea...

Question

Given the reaction $2 A (g) + B (g) + h e a t ⇌ 3 C (g) + D (g)$ , what could be done to the reaction to shift the equilibrium so that more $D$ is made?

A

Increase the concentration of

D

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B

Increase the concentration of

C

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C

Increase the temperature

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D

Increase the pressure

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E

Remove

B

from the reaction

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Solution

The correct option is E Increase the temperature
To shift the equilibrium so that more $D$ is made, increase the temperature.
Since the term heat is on reactant sides, the reaction is endothermic. Heat is absorbed during forward reaction. When temperature is increased, the equilibrium will shift in the forward direction so that more and more heat is absorbed. This will minimize the effect of increase in temperature.

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2 A (g) + B (g) ⇌ 3 C (g) + D (g)

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