# Reaction Rate Constant using Arrhenius Equation – formula – examples – calculation – calculator

[insert_php]
\$result = \$A = \$E = \$T = \$temp = \$temp1 = 1;
\$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 oC.

 Frequency Factor (A) Sec^-1 Activation Energy (Ea) KJ mol^-1 Temperature (T) K Result: Reaction Rate Constant (K) [insert_php] echo \$result; [/insert_php] Sec^-1

## 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;