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Question
Activation energy of a chemical reaction can be determined by ______.
Options
determining the rate constant at standard temperature.
determining the rate constants at two temperatures.
determining probability of collision.
using catalyst.
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Solution
Activation energy of a chemical reaction can be determined by determining the rate constants at two temperatures.
Explanation:
`log k_2/k_1 = E_a/(2.303R)(1/T_1 - 1/T_2)`
Where, Ea = activation energy
T2 = higher temperature
T1 = lower temperature
k1 = rate constant at temperature T1
k2 = rate constant at temperature T2
This equation is known as Arrhenius equation.
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