$result = $A = $E = $T = $temp = $temp1 = 1;
$R = 0.008314;
$A = $_POST[‘A’];
$E = $_POST[‘E’];
$T = $_POST[‘T’];
$temp = $R * $T;
$E = $E* -1;
$temp = $E / $temp;
$temp1 = exp ($temp);
$result = $A * $temp1;
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.
Formula of Reaction Rate Constant calculator
K = A × e (-Ea / (R×T))
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;