Question

If value of Qc is greater than Kc then what is position of equilibrium?

Answer 1

The equilibrium lies mainly in the backward direction.

Answer 2

Hi there !
Here's the answer:

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¶ POINTS TO REMEMBER :

• According to Le Chatlier's principle,
If a dynamic equilibrium is disturbed by changing the conditions, then the position of equilibrium shifts to counter-act the change, to reestablish an equilibrium.

So,
It is clear from the Le Chatlier's principle that the reactions always tend toward equilibrium.

• $Q_{c}$ is the ratio of the conc. or pressure of Products to conc. or pressure of reactants

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¶¶¶ ANSWER:

Consider the reaction

$A+B \rightarrow C+D$

$Q_{c}= \frac{[C]^{c}\: [D]^{d}}{[A]^{a}\: [B]^{b}}$

If $Q_{c}$ > $K_{C}$, the reaction favors the reactants.
Indicating that More products are present than there would be at equilibrium.

As per Le Chatlier's principle,
More Reactants are produced from the excess products by the Reaction, to tend system toward an equilibrium state.

This makes the System to shift left, allowing the system to be in equilibrium.

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