5.1 rates, orders and equilibrium

Question 1

what is zero order

Answer 1

the conc of the substance has no effect on the rate

Question 2

what is first order

Answer 2

as the conc doubles, the rate doubles

Question 3

what is second order

Answer 3

• as the conc 2x , the rate 4x
• as the conc 3x, the rate 6x

Question 4

concerntration/time graph for 0 order

Answer 4

Question 5

rate/conc graph for 0 order

Answer 5

Question 6

conc/time graph for 1st order

Answer 6

Question 7

rate/conc graph for 1st order

Answer 7

Question 8

conc/time graph for 2nd order

Answer 8

Question 9

rate/conc graph for 2nd order

Answer 9

Question 10

arrhenius equation

Answer 10

A = pre-exponential factor
Ea = activation energy in kJmol-1
T = temp in K
R = gas constant

Question 11

log form of arrhenius equation

Answer 11

Question 12

how to calculate Ea and A from a graph of Ink against 1/T

Answer 12

gradient = Ea/R
y-intercept = InA

Question 13

what is the rate determining step?

Answer 13

the slowest step

Question 14

what is involved in the rate determining step if rate = [A][B]

Answer 14

both A and B

Question 15

what is involved in the rate determining step if rate = [A]²

Answer 15

two molecules of A

Question 16

what is Kp

Answer 16

the equilibrium constant for a reaction involving gases at a constant temperature

Question 17

partial pressure of gas A =

Answer 17

mole fraction of gas A x total pressure

Question 18

mole fraction of gas A =

Answer 18

Question 19

equation for Kp

Answer 19