Activation energy of a chemical reaction can be determined by

Options

A. Evaluating rate constant at standard temperature
B. Evaluating velocities of reaction at two different temperatures
C. Evaluating rate constants at two different temperatures
D. Changing concentration of reactants

Answer

C

Explanation

Activation energy can be calculated by using arrehenius equation. The arrehenius equation is
`log"" (k_2)/(k_1) = (E_0)/( 2.303 R) [(T_2 - T_1)/( T_1 T_2) ]`
where `k_1 and k_2` = rate constant at two different temperature
`E_0=` Activation energy
`R=` Gas constant
So, activation energy of a chemical reaction can be determine by evaluating rate constant at two different temperatures.