Using the Arrhenius equation Flashcards
1
Q
What is the unit for temperature?
A
= kelvins, this is 273+ celcius
2
Q
What is ‘R’?
A
= 8.31
3
Q
What is the unit for activation energy?
A
= J mol ^-1
4
Q
What is the re-arrangement of the equation?
A
In K = In A - activation energy / R x t
5
Q
How to we equate this as a graph?
A
= K is porportional to the rate, so InK can be replaced by In(rate)
= and this can be plotted against 1/T
= the activation energy can be calculated by the gradient
= and activation energy is calculated by gradient x R
6
Q
How to find gradient?
A
= difference in y/difference in x
7
Q
How do we find the activation energy by using the gradient?
A
= -gradient x R
= can convert into Kj by diving by 1000
8
Q
A
