Activation energy of a chemical reaction can be determined by --------.

Options

A. determing the rate constant at standard temperature
B. determining the ratio of rate constants at two temperatures
C. determining probability of collision
D. using catalyst

Answer

B

Explanation

Activation energy of a chemical reaction is related to rate constant of a recation at two different temperature i.e., `K_(1)` and `K_(2)` respectively.
In `(K_(1)/(K_(2))) =(E_(a))/(R) [(1)/(T_(1)) -(1)/(T_(2))]`
where, `E_(s)` = activation energy
`T_(2)`= higher temperature.
`T_(1)` = lower temperature
`k_(1)` = rate constant at temperature `T_(1)`
` k_(2)` = rate constant at temperature `T_(2)`
This equation is Known as Arrhenius equation .