Rate Constant Calculator

Formula

To calculate the rate constant:

\[ k = \frac{R}{A^m \times B^n} \]

Where:

\(k\) is the Rate Constant
\(R\) is the Reaction Rate
\(A\) is the Molar Concentration of Substance A
\(m\) is the Partial Order of Reaction for A
\(B\) is the Molar Concentration of Substance B
\(n\) is the Partial Order of Reaction for B

Rate Constant Definition

A rate constant is a term used in chemistry to define the ratio or proportionality of the rate of a reaction to the concentrations of the reactants. It provides a measure of how quickly a reaction occurs and is dependent on the concentrations of the reactants and their respective partial orders of reaction. The rate constant is crucial for understanding and predicting the behavior of chemical reactions.

Example Calculation 1

Let's assume the following values:

Reaction Rate (\(R\)) = 0.5
Molar Concentration of Substance A (\(A\)) = 2
Partial Order of Reaction for A (\(m\)) = 1
Molar Concentration of Substance B (\(B\)) = 3
Partial Order of Reaction for B (\(n\)) = 2

Using the formula:

\[ k = \frac{0.5}{2^1 \times 3^2} = \frac{0.5}{2 \times 9} = \frac{0.5}{18} \approx 0.0278 \]

The rate constant is approximately 0.0278.

Example Calculation 2

Let's assume the following values:

Reaction Rate (\(R\)) = 1.2
Molar Concentration of Substance A (\(A\)) = 4
Partial Order of Reaction for A (\(m\)) = 2
Molar Concentration of Substance B (\(B\)) = 2
Partial Order of Reaction for B (\(n\)) = 1

Using the formula:

\[ k = \frac{1.2}{4^2 \times 2^1} = \frac{1.2}{16 \times 2} = \frac{1.2}{32} = 0.0375 \]

The rate constant is 0.0375.