The activation energy of a reaction can be determined from the slope of which of the following graphs?
By Arrhenius equation
Where, Ea = energy of activation
Applying log on both the side.
ln k =lnA −EaRT....(i)
Compare the above equation w.r.t. straight line equation of y =mx +c. Thus, if a plote on ln k vs 1T is a straight line, the validity of the equation is confirmed.
Slope of the line =−EaR
Thus, measuring the slope of the line, the value of Ea can be calculated.