Rate of Reaction and Rate Constant

Rate of Reaction:
The rate of a chemical reaction is a measure of how quickly reactants are converted into products. It is determined by the change in concentration of the reactants or products over a given period of time. The rate of reaction can be expressed as the rate at which the concentration of a reactant decreases or the rate at which the concentration of a product increases.

Rate Constant:
The rate constant, denoted as k, is a proportionality constant that relates the rate of reaction to the concentrations of the reactants. It is specific to a particular reaction at a given temperature and is independent of reactant concentrations. The rate constant is determined experimentally and is often used to determine the order of a reaction.

Order of Reaction:
The order of a reaction is the sum of the exponents in the rate equation. It represents how the rate of reaction is affected by changes in the concentration of the reactants. The order can be zero, first, second, or any other positive or negative integer.

Explanation of the Answer:

In this question, it is given that the rate of the reaction is equal to the rate constant. This implies that the rate equation for the reaction can be written as:

rate = k[A]^x[B]^y

where [A] and [B] are the concentrations of the reactants, and x and y are the orders of the reaction with respect to A and B, respectively.

Since the rate of reaction is equal to the rate constant, the rate equation simplifies to:

rate = k

Comparing this with the general rate equation, we can conclude that the order of the reaction is zero. This means that the rate of the reaction is independent of the concentrations of the reactants.

Therefore, the correct answer is option 'B' which states that the order of the reaction is 0.