Rate of Reaction Calculator for Unimolecular, Bimolecular and Initial Rates

Rate of Reaction calculator for Unimolecular and Bimolecular reaction alongside Initial Rate Calculator so that the rate of reaction can be calculated from concentration as well as the percentage change in rates.

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Rate of Reaction Calculator for Unimolecular Reaction:

Rate of Reaction Calculator

Rate of Reaction Calculator (Unimolecular)

Order of Reaction for [A] (1): Rate Constant (with units, e.g., s^-1): Initial Concentration of A (with units):

Procedure for using Rate of Reaction Calculator for Unimolecular Reaction-

Firstly, Enter the Order of Reaction with respect to [A] (x):

Enter the order of reaction for reactant A. This represents the power to which the concentration of A is raised in the rate equation. Enter -1 if A is reactant.

rate = k[A]

Then Fill the Rate Constant (with units):

Enter the rate constant for the reaction. This is a constant value that depends on the specific reaction and has associated units (e.g., M^-1s^-1).

Further Enter the Concentration:

Enter the initial concentration of reactant A. Make sure to include the appropriate units for concentration (e.g., Molarity).

What is Rate of Reaction?

The general rate law for a unimolecular elementary reaction is represented by A → products. The terms unimolecular, bimolecular, and termolecular refer to reactions involving, respectively, one, two, and three atoms (or molecules) interacting or colliding in any one reaction step.

Rate=k[A] where A is reactant, k is reaction constant.

Example: The most common example of a unimolecular reaction is radioactive decay, such as the spontaneous emission of an alpha particle from uranium-238 to give thorium and helium.

U→ Th + He
where,
Rate  = -k[Cu]

Rate of Reaction Calculator for Bimolecular Reaction:

Rate of Reaction Calculator

Order of Reaction for [A] (x): Order of Reaction for [B] (y): Rate Constant (with units, e.g., M^-1s^-1): Concentration of Component A (with units): Concentration of Component B (with units):

Procedure for using Rate of Reaction Calculator for Bimolecular Reaction-

Here, Enter the Order of Reaction with respect to [A] (x):

Enter the order of reaction for reactant A. This represents the power to which the concentration of A is raised in the rate equation.

Then, Give the Order of Reaction with respect to [B] (y):

Enter the order of reaction for reactant B. This represents the power to which the concentration of B is raised in the rate equation.

Further, Enter the Rate Constant (with units):

Enter the rate constant for the reaction. This is a constant value that depends on the specific reaction and has associated units (e.g., M^-1s^-1).

Enter the Concentration of Component A (with units):

Enter the initial concentration of reactant A. Make sure to include the appropriate units for concentration (e.g., Molarity).

Again, Fill the Concentration of Component B (with units):

Enter the initial concentration of reactant B. Again, include the appropriate units for concentration.

Now, check “Calculate Rate”:

Press the “Calculate Rate” button to perform the calculation based on the given inputs.

Check the Result:

The displayed result be your desired Rate of reaction.

The rate of reaction is determined by the formula : Rate=k×[A]x×[B]

Initial Rate Calculator

Final Rate: Percentage Change:

Give the Final Rate:

Input the final rate of the process or phenomenon in the “Final Rate” field. This represents the rate value you want to calculate the initial rate from.

Feed the Percentage Change:

Input the percentage change in the “Percentage Change” field. This represents the relative change in the rate from the initial to the final state.

Click “Calculate Initial Rate”:

Click the “Calculate Initial Rate” button to perform the calculation based on the entered final rate and percentage change.