Which of the following is true for the equilibrium constant of a reaction?
a. it is a ratio of the concentrations in a reaction.
b. it remains the same at different temperatures.
c. it is represented by the symbol h.
d. its value is always close to 1.

The correct answer is Option A.

Explanation:

Equilibrium constant is defined as the ratio of concentration of product to the concentration of reactants each raised to the power their stoichiometric ratios. It is represented by the symbol 'K'. For the general equilibrium equation:

The expression for equilibrium constant is given as:

There are three cases:

Thus, the correct answer is Option A.

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line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).