Question

In: Chemistry

Decide which of the following statements are True and which are False about equilibrium systems: If...

Decide which of the following statements are True and which are False about equilibrium systems:

If K = 8 for the reaction A + B ⇌ C + D, K will equal -8 for the reaction C + D ⇌ A + B

For a reaction with K >> 1, the rate of the forward reaction is less than the rate of the reverse reaction at equilibrium.

The value of K at constant temperature does not depend on the amounts of reactants and products that are mixed together initially.

A large value of K means the equilibrium position lies far to the left and that a lot of reactant will be present at equilibrium

Solutions

Expert Solution

(1)

False

If K = 8 for the reaction A + B ⇌ C + D, K will equal to 1/8 for the reaction C + D ⇌ A + B.When we reverse a chemical equation, the value of the equilibrium constant for the new equation will be the reciprocal of the value of the equilibrium constant of the old equation.

(2)

False

For a reaction with K >> 1, the rate of the forward reaction is more than the rate of the reverse reaction at equilibrium.

(3)

True

The value of K at constant temperature does not depend on the amounts of reactants and products that are mixed together initially.

At constant temperature, the value of the equilibrium constant K is constant.

(4)

False

A large value of K means the equilibrium position lies far to the right and that a lot of product will be present at equilibrium

A small value of K means the equilibrium position lies far to the left and that a lot of reactant will be present at equilibrium


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