Arrhenius equation

Question 1

What does k represent?

Answer 1

Rate constant

Question 2

What does A represent

Answer 2

Pre-exponential factor (frequency factor)

Question 3

What does Ea represent?

Answer 3

Activation energy

Question 4

What does T represent?

Answer 4

Temperature

Question 5

What is the effect of increasing T on K?

Answer 5

It increases K

Question 6

What is the effect of increasing Ea on k?

Answer 6

It decreases k

Question 7

What is the effect of decreasing A on k?

Answer 7

It decreases k

Question 8

What are the units of activation energy?

Answer 8

J mol-1

Question 9

What does the Arrhenius equation describe?

Answer 9

The link between temperatures (collision frequency) and k (rate of reaction)

Question 10

What are the uses of the equation?

Answer 10

To predict the change in rate when temperature changes and to find activation energy of reaction

Question 11

What is the logarithmic form of the equation?

Answer 11

ln k = -(Ea/RT) + lnA

Question 12

What does the gradient of the graph represent?

Answer 12

-Ea/RT

Question 13

What does the y-intercept represent?

Answer 13

A

Question 14

What is plotted on the y axis?

Answer 14

ln k

Question 15

What is plotted on the x axis?

Answer 15

1/T