In a reaction where a + b ab, what does an equilibrium position of a= 14%, b = 14%, and ab= 72% indicate about the reaction?   a. because a and b are equal, the reaction has reached equilibrium. b. there is more a and b than ab at equilibrium, and the reaction favors the reactants. c. there is more ab than a and b at equilibrium, and the reaction favors the products. d. there is more ab than a and b at equilibrium, and the reaction favors the reactants. e. the reaction is not at equilibrium.

Answer : The correct option is, (C) There is more AB than A and B at equilibrium, and the reaction favors the products.

Explanation :

is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.

Or, it is determined by multiplying the concentrations of products together and divided by the concentrations of the reactants.

The equilibrium reaction is :

The expression for equilibrium constant will be,

where,

= equilibrium concentration

[AB] = concentration of AB = 72 % = 0.72 M

[A] = concentration of A = 14 % = 0.14 M

[B] = concentration of B= 14 % = 0.14 M

There are 3 conditions which are :

When ; then the reaction is product favored.

When ; then the reaction is reactant favored.

When ; then the reaction is in equilibrium.

As per question, the value of is greater than 1. So, the reaction is product favored.

Hence, the correct option is, (C) There is more AB than A and B at equilibrium, and the reaction favors the products.

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