$R = 0.008314;

if(isset($_POST[‘submit’]))

{

$A = $_POST[‘A’];

$E = $_POST[‘E’];

$T = $_POST[‘T’];

}

unset($_POST[‘submit’]);

$temp = $R * $T;

$E = $E* -1;

$temp = $E / $temp;

$temp1 = exp ($temp);

$result = $A * $temp1;

[/insert_php]Reaction Rate Constant using Arrhenius Equation – formula – examples – calculation – calculator

In 1889, a researcher Svante Arrhenius proposed the Arrhenius equation. Arrhenius equation relates the reaction rate with temperature.

According to Arrhenius equation, an increase of temperature of a reaction results in an increase in the reaction rate.

Normally, the reaction rate is doubled when we increase the temperature to 10 ^{o}C.

Table of Contents

## Formula of Reaction Rate Constant calculator

**K = A × e ^{(-Ea / (R×T))}**

Where,

Frequency Factor (A), Activation Energy(Ea), Temperature(T)

K = Rate Constant, A = Frequency Factor, Ea = Activation Energy, R = Universal Gas Constant (8.314 × 10-3 kJ mol-1 K-1), T = Temperature

## Example of Reaction Rate Constant calculator

e=2.718; R=0.008314; A=2; Ea=3; T=4;

Formula:

A*exp(Ea/R*T);

mul=R*T;

Div=Ea/mul;

pow=exp(div);

result=A*pow;

reult=1.3293369244494E-39;