Decide which of the following statements are True and which are False about equi

Question

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

True False  For the following reaction: H2(g) + F2(g) 2HF(g) the values of K and Kp are not the same.

True False  A large value of K means the equilibrium position lies far to the left.

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

True False  For the following reaction: CaCO3(s) CaO(s) + CO2(g) the [CaCO3] appears in the denominator of the equilibrium expression.

True False  The value of K at constant temperature depends on the amounts of reactants and products that are mixed together initially.

Explanation / Answer

False : For the following reaction: H2(g) + F2(g) 2HF(g) the values of K and Kp are not the same.

here number of moles of products = moles of reactants ,

so delta n = 0

Kp = Kc (RT)^deltan   :   delta n = 0

Kp = Kc (same)

True : A large value of K means the equilibrium position lies far to the left.

larger K value means equilibrium position is to the right.so far to the left

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

False  For the following reaction: CaCO3(s) CaO(s) + CO2(g) the [CaCO3] appears in the denominator of the equilibrium expression.

pure solids and liquids are not taken into consideration of equilibrium expression.

False The value of K at constant temperature depends on the amounts of reactants and products that are mixed together initially.

The value of K depend only on temperature.

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