Question

Which of the following is true for the equilibrium constant of a reaction?

It is a ratio of coefficients of reactants to products.
It has a different value at different temperatures.
It is represented by the symbol H.
Its value is always less than 1.

Answer 1

Answer:

It has a different value at different temperatures.

Explanation:

For any system in equilibrium, the molar concentration of all the species on the right hand side are related to the molar concentrations of those at the left side by a constant known as the equilibrium constant.

The equilibrium is a constant at a given temperature as it is temperature dependent.

A change in temperature of an equilibrium system shifts the system to a new equilibrium point. A rise in temperature actually shifts equilibrium position to the direction that absorbs heat and vice versa.

The shift in equilibrium as a result of temperature change is actually a change in the value of the equilibrium constant. Equilibrium constant is represented as $K_{eq}$

The derivation of the equilibrium constant is based on the Law of Mass Action which states: the rate of a chemical reaction is proportional to the product of the concentrations of the reacting substances.