Rate equations and Kp

Question 1

Reaction rate

Answer 1

The change in the amount of reactant or product per unit time

Question 2

How to calculate the gradient

Answer 2

Change in Y / Change in X

Question 3

How to calculate rate from a gradient

Answer 3

Draw a line of best fit
Draw a triangle from 2 points
Y/X
if the line points down it is negative

Question 4

How to calculate rate from a curved graph

Answer 4

Find the point on the curve you need to look at eg 0s or 3s

Ruler at that point but can still see the whole curve

Make sure curve is equal on both sides

Draw line OBF and extrapolate

Triangle on tangent

Y/X

Question 5

Rate equation

Answer 5

Rate = K[A][B] and the indices are the order of reaction

Question 6

If [A] changes and [B] stays the same, the order…

Answer 6

of reaction is 0 with respect to [A]

Question 7

If the rate is proportional to [A] the order..

Answer 7

of reaction is 1 with respect to [A]

Question 8

If the rate is proportional to [A]^2 the order..

Answer 8

of reaction is 2 with respect to [A]

Question 9

How to find overall rate

Answer 9

The indices added up

Question 10

What does K =

Answer 10

The rate constant

Question 11

Effect rate has on temperature

Answer 11

As the temperature increases the rate increases. The number of collisions are more frequent per unit time. More molecules react with energy more than the activation energy. So MORE successful collisions