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Explain how the equilibrium constant K_(c) predict the extent of a ronction (ii) Explain about the effect of catalyst in an equilibrium reaction? |
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Answer» Solution :The value of equilibrium constant `K_(c)` tells us the extent of the reaction i.c., it indicatchow far the reaction has proceeded towards product formation at a given temperature. 2. A LARGE value of `K_(c)` indicates that the reaction reaches equilibrium with high productyield on the other hand, lower value of `K_(c)` indicates that the reaction reaches equilibrium with low product yield. 3. If`K_(c) gt 10^(3)`, the reaction PROCEEDS nearly to completion. 4. If`K_(c) lt10^(-3)`the reaction rarely proceeds. 5. It the K, is in the RANGE `10^(-3)` to `1^(3)` significant AMOUNT of both reactants and products are present at equilibrium. (ii) Addition of catalyst does not affect the state of equilibrium. The catalyst increases the RATE of both the forward and reverse reactions to the same extent. Hence it does not change the equilibrium composition of the reaction mixture |
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