Enter the reaction rate, molar concentrations of A and B, and the partial orders of reaction of A and B to calculate the rate constant.

## Rate Constant Formula

The following formula is used to calculate a rate constant.

k = R / (A^m * B^n)
• Where R is the reaction rate
• A is the molar concentration of substance A
• m is the partial order of reaction of substance A
• B is the molar concentration of substance B
• n in the partial order of reaction of substance B

To calculate a rate constant, divide the reaction rate by the product of the molar concentration of A raised to the power of the partial order reaction of A, times the molar concentration of B raised to the power of the partial order reaction of B.

## Rate Constant Definition

A rate constant is a term used in chemistry to define the ratio or proportionality of the rate of reaction to the concentrations of the reactants.

## Rate Constant Example

How to calculate a rate constant?

1. First, determine the concentrations of A and B.

Calculate the molar concentration per unit volume of both reactants.

2. Next, determine the partial orders of reaction.

Calculate the partial orders of reaction with respect to reactants A and B.

3. Finally, calculate the rate constant.

Calculate the rate constant using the formula above.

## FAQ

What is a reaction rate?

A reaction rate is the change in concentration of a reactant over time.