Advanced Rates Of Reaction

Question 1

What is a first order reaction

Answer 1

When the this substance doubles so does rate (2little 1)

Question 2

What is a second order reaction

Answer 2

When this increases by 2 the rate is increased by a factor of 2

Question 3

What is the rate equation

Answer 3

Rate=K (A)Order X (B)Order

Question 4

What is overall order

Answer 4

Sum of orders

Question 5

Concentration time graph

Answer 5

Pleated through continuous monitoring
Gas collection
Mass loss

Question 6

How to do rate colorimeter

Answer 6

Wave length light controlled with filter
Amount of light absorbed is measured

Eg CH3COCH3 + I2 -> Ch3CoCh2I +H+ + I-

Orange/ brown colour fades

Question 7

In a concentration time graph what is rate

Answer 7

Grading

Question 8

In a concentration time graph what shape is 0 order

Answer 8

Straight down

Question 9

In a concentration time graph what is 1st order

Answer 9

Curved down

Question 10

In a concentration time graph what is second order

Answer 10

More curved down

Question 11

In a 1st order reaction is half life constant

Answer 11

Yes

Question 12

How to find K from half life

Answer 12

K= Ln(2)/half life

Question 13

What is a half life

Answer 13

Amount of time required for half of the reactant to be used up

Question 14

How to find K from concentration time graph

Answer 14

Tangent at value = rate

Re arrange rate equation

Question 15

How to find K from a rate concentration graph

Answer 15

K = gradient

Question 16

Rate concentration graph what does zero order look like

Answer 16

Straight horizontal line

Question 17

Rate concentration graphs what does 1st order look like

Answer 17

Straight up

Question 18

Rate concentration graph what does second order look like

Answer 18

Curved up

Question 19

How to get K form a second order reactions

Answer 19

Square results

Question 20

Log graphs Y and X axis

Answer 20

Y= log rate
X = log concentration

Question 21

Y=mx + c for rate

Answer 21

Log(rate)= M log(A) + Log(K)

Question 22

Initial rates method

Answer 22

Start reaction at 0
Obtained by clock reaction
Initial rate is proportional to 1/t

H2O2 +2I- (Aq) + 2 H+ -> I2 + 2 H2O
With starch black to colourless

Question 23

How accurate is the iodine clock

Answer 23

You have to assume average rate of reaction

Question 24

What is the rate determining step

Answer 24

The slowest step

Question 25

What does the order shoe is rate determining step

Answer 25

Ratio

Question 26

As temperature increases what does rate do

Answer 26

Increase

Question 27

Where to find Arhenious equation

Answer 27

Data sheet (this includes Ln one)

Question 28

Arehenious y=mx +c

Answer 28

Ln(K) = -ea 1/t + Lna

R

Question 29

Calculating activation energy from Arehenious graph

Answer 29

Gas constant times by gradient

Question 30

What does A equal

Answer 30

E to the power of Ln(a)