Rate Equations

Question 1

rate equation

Answer 1

Rate = k [A]m [B]n

Question 2

total order

Answer 2

m + n

Question 3

zero order

Answer 3

conc has no effect on rate

Question 4

first order

Answer 4

rate is directly proportional to conc

Question 5

second order

Answer 5

rate is directly proportional to square of conc

Question 6

rate constant increases when

Answer 6

temp increases

bigger k = faster reaction

Question 7

Arrhenius equation

Answer 7

k = Ae ^ -Ea/RT

k = rate constant
A = Arrhenius constant
e = mathematical constant
Ea = activation energy 
R = gas constant
T = temp/K

Question 8

what are the rate constant and rate of reaction directional proportional to?

Answer 8

molecules with E > Ea

Question 9

higher temp = ?

Answer 9

higher rate constant

higher rate of reaction

Question 10

Arrhenius rearranged

Answer 10

lnk = lnA - Ea/RT

Question 11

increased Ea = ?

Answer 11

decreased k

Question 12

gradient

Answer 12

• Ea/R

Question 13

y intercept

Answer 13

lnA

Question 14

y = mx + c

Answer 14

lnk = (-Ea/R) (1/T) / lnA

Question 15

why do we use initial rate

Answer 15

exact conc of reactants is known

Question 16

determining rate equation experimentally

Answer 16

temp must remain constant

only reactant conc altered

draw cone-time graph

draw tangent at 0