Rate Constant at Half Time for First Order Reaction Calculator

↳

⤿

First Order Reaction

Arrhenius Equation

Chain Reactions

Collision Theory

Collision Theory and Chain Reactions

Complex Reactions

Enzyme Kinetics

Important Formulas on Enzyme Kinetics

Important Formulas on Reversible Reaction

Second Order Reaction

Temperature Coefficient

Transition State Theory

Zero Order Reaction

✖The Half Time of the reaction is the time at which the concentration of reactant is exactly half of the initial concentration.ⓘ Half Time [t_1/2]

+10%

-10%

✖The Rate Constant for First Order Reaction is defined as the rate of the reaction divided by the concentration of the reactant.ⓘ Rate Constant at Half Time for First Order Reaction [k_first]

⎘ Copy

👎

Formula

✖

Rate Constant at Half Time for First Order Reaction

Formula

`"k"_{"first"} = 0.693/"t"_{"1/2"}`

Example

`"0.52027s⁻¹"=0.693/"1.332s"`

Calculator

LaTeX

Reset

👍

Download Chemical Kinetics Formula PDF

Rate Constant at Half Time for First Order Reaction Solution

STEP 0: Pre-Calculation Summary

Formula Used

Rate Constant for First Order Reaction = 0.693/Half Time
k_first = 0.693/t_1/2
This formula uses 2 Variables

Variables Used

Rate Constant for First Order Reaction - (Measured in 1 Per Second) - The Rate Constant for First Order Reaction is defined as the rate of the reaction divided by the concentration of the reactant.
Half Time - (Measured in Second) - The Half Time of the reaction is the time at which the concentration of reactant is exactly half of the initial concentration.

STEP 1: Convert Input(s) to Base Unit

Half Time: 1.332 Second --> 1.332 Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

k_first = 0.693/t_1/2 --> 0.693/1.332

Evaluating ... ...

k_first = 0.52027027027027

STEP 3: Convert Result to Output's Unit

0.52027027027027 1 Per Second --> No Conversion Required

FINAL ANSWER

0.52027027027027 ≈ 0.52027 1 Per Second <-- Rate Constant for First Order Reaction

(Calculation completed in 00.004 seconds)

You are here -

Home » Chemistry » Chemical Kinetics » First Order Reaction » Rate Constant at Half Time for First Order Reaction

Credits

Created by Prashant Singh

K J Somaiya College of science (K J Somaiya), Mumbai

Prashant Singh has created this Calculator and 700+ more calculators!

Verified by Akshada Kulkarni

National Institute of Information Technology (NIIT), Neemrana

Akshada Kulkarni has verified this Calculator and 900+ more calculators!

< 18 First Order Reaction Calculators

Graphical Representation of Time for Completion

Go Time for completion = (2.303/Rate Constant for First Order Reaction)*log10(Initial Concentration for First Order Reaction)-(2.303/Rate Constant for First Order Reaction)*log10(Concentration at Time t)

Temperature in Arrhenius Equation for First Order Reaction

Go Temperature in Arrhenius Eq for 1st Order Reaction = modulus(Activation Energy/[R]*(ln(Frequency Factor from Arrhenius Eqn for 1st Order/Rate Constant for First Order Reaction)))

Rate Constant for First Order Reaction from Arrhenius Equation

Go Rate Constant for First Order Reaction = Frequency Factor from Arrhenius Eqn for 1st Order*exp(-Activation Energy/([R]*Temperature for First Order Reaction))

Arrhenius Constant for First Order Reaction

Go Frequency Factor from Arrhenius Eqn for 1st Order = Rate Constant for First Order Reaction/exp(-Activation Energy/([R]*Temperature for First Order Reaction))

Activation Energy for First Order Reaction

Go Energy of Activation = [R]*Temperature of Gas*(ln(Frequency Factor from Arrhenius Equation/Rate Constant for First Order Reaction))

Time for Completion for First Order given Rate Constant and Initial Concentration

Go Time for completion = 2.303/Rate Constant for First Order Reaction*log10(Initial Concentration for First Order Reaction/Concentration at Time t)

Rate Constant of First Order Reaction using Logarithm to base 10

Go Rate Constant for First Order Reaction = 2.303/Time for completion*log10(Initial Concentration for First Order Reaction/Concentration at Time t)

Time for Completion of First Order Reaction

Go Time for completion = 2.303/Rate Constant for First Order Reaction*log10(Initial Reactant A Concentration/Concentration at Time t of Reactant A)

Time for Completion by Titration Method for First Order Reaction

Go Time for completion = (2.303/Rate Constant for First Order Reaction)*log10(Initial Reactant Volume/Volume at Time t)

Rate Constant by Titration Method for First Order Reaction

Go Rate Constant for First Order Reaction = (2.303/Time for completion)*log10(Initial Reactant Volume/Volume at Time t)

Relaxation Time of Reversible First Order

Go Relaxation Time of Reversible First Order = 1/(Forward Rate Constant+Rate Constant of Backward First Order)

Quarter Life of First Order Reaction

Go Quarter Life of First Order Reaction = ln(4)/Rate Constant for First Order Reaction

Rate Constant at Half Time for First Order Reaction

Go Rate Constant for First Order Reaction = 0.693/Half Time

Half Time Completion of First Order Reaction

Go Half Time = 0.693/Rate Constant for First Order Reaction

Average Time of Completion for First Order Reaction

Go Average time = 1/Rate Constant for First Order Reaction

Rate constant given average time

Go Rate Constant for First Order Reaction = 1/Average time

Half Time for Completion given Average Time

Go Half Time = Average time/1.44

Average Time of Completion given Half Time

Go Average time = 1.44*Half Time

Rate Constant at Half Time for First Order Reaction Formula

Rate Constant for First Order Reaction = 0.693/Half Time
k_first = 0.693/t_1/2

What is first-order reaction?

In the first-order reaction, the rate of reaction is proportional to the first power of the concentration of the reactant. The concentration of the reactant in the first-order reaction decreases exponentially with time.

How to Calculate Rate Constant at Half Time for First Order Reaction?

Rate Constant at Half Time for First Order Reaction calculator uses Rate Constant for First Order Reaction = 0.693/Half Time to calculate the Rate Constant for First Order Reaction, The Rate constant at half time for first order reaction formula is defined as the rate of the reaction per concentration of the reactant. The formula is a natural logarithm of 2 divided by the half time of the reaction. Rate Constant for First Order Reaction is denoted by k_first symbol.

How to calculate Rate Constant at Half Time for First Order Reaction using this online calculator? To use this online calculator for Rate Constant at Half Time for First Order Reaction, enter Half Time (t_1/2) and hit the calculate button. Here is how the Rate Constant at Half Time for First Order Reaction calculation can be explained with given input values -> 0.126 = 0.693/1.332.

FAQ

What is Rate Constant at Half Time for First Order Reaction?

The Rate constant at half time for first order reaction formula is defined as the rate of the reaction per concentration of the reactant. The formula is a natural logarithm of 2 divided by the half time of the reaction and is represented as k_first = 0.693/t_1/2 or Rate Constant for First Order Reaction = 0.693/Half Time. The Half Time of the reaction is the time at which the concentration of reactant is exactly half of the initial concentration.

How to calculate Rate Constant at Half Time for First Order Reaction?

The Rate constant at half time for first order reaction formula is defined as the rate of the reaction per concentration of the reactant. The formula is a natural logarithm of 2 divided by the half time of the reaction is calculated using Rate Constant for First Order Reaction = 0.693/Half Time. To calculate Rate Constant at Half Time for First Order Reaction, you need Half Time (t_1/2). With our tool, you need to enter the respective value for Half Time and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Rate Constant for First Order Reaction?

In this formula, Rate Constant for First Order Reaction uses Half Time. We can use 4 other way(s) to calculate the same, which is/are as follows -

Rate Constant for First Order Reaction = 2.303/Time for completion*log10(Initial Concentration for First Order Reaction/Concentration at Time t)
Rate Constant for First Order Reaction = (2.303/Time for completion)*log10(Initial Reactant Volume/Volume at Time t)
Rate Constant for First Order Reaction = 1/Average time
Rate Constant for First Order Reaction = Frequency Factor from Arrhenius Eqn for 1st Order*exp(-Activation Energy/([R]*Temperature for First Order Reaction))

Home

FREE PDFs

🔍 Search