Question

I'm supposed to use the formula ln(k)=(-Ea/R)(1/T)+ln(A) but have no clue what to do after plugging in the information since idk what the reaction energy or A is, Problem attached

Answer 1

@aaronq

Answer 2

it can be converted as, k = A e^{-E_a/(R T)}
it is the Arrhenius equation

Activation energy, EA
This is the minimum energy needed for the reaction to occur.

The expression, e-(EA / RT)
this expression counts the fraction of the molecules present in a gas which have energies equal to or in excess of activation energy at a particular temperature.

The frequency factor, A
this called the pre-exponential factor or the steric factor.
A is a term which includes factors like the frequency of collisions and their orientation. It varies slightly with temperature.


finally k=no of effective collisions
=no of collisions*fraction of effective collisions
=frequency(A)*e^{-E_a/(R T)}

Answer 3

look at the equation, "ln(k)=(-Ea/R)(1/T)+ln(A)", it looks just like the equation of a line, "y=mx+b".