Question

Question 7

An overall 2nd order reaction has a rate constant of 7.4 x 10^-2 1/Ms. How long will it take for the reaction to be 60% complete? (1 point ) *

107.73 s

14.3 s

20.27s

93.16 s

Question 8

An overall 0th order reaction has a rate constant of 5.2 x 10^-4 M/s. How long will it take for the reaction to be 95% complete? (1 point ) *

1690 s

1830 s

2040 s

2170 s

Question 9

What is the rate constant of a chemical reaction whose reactant A is 1st order and reactant B is 1st order and a rate of 4.0 x 10^-3 M/s ? [A] = 8.0 x10^-2, [B]= 2.0 x 10 ^-2 (1 point ) *

1.3 1/s

1.8 M/s

2.5 1/Ms

3.2 1/s

Question 10

What is the rate constant of a chemical reaction whose reactant A is 0th order and reactant B is 2nd order and a rate of 0.0195 M/s? [A] = 0.015 M , [B]= .006 M (1 point ) *

320 1/Ms

490 1/Ms

540 1/Ms

650 1/Ms

Question 11

What is the rate constant of a chemical reaction whose reactant A is 1st order and reactant B is 0th order and a rate of 0.047 M/s? [A] = 0.045 M, [B]= 0.004 M (1 point ) *

0.39 1/s

1.04 1/s

1.07 M/s

1.14 M/s

Question 12

What is the rate law of a chemical reaction whose reactant A is 1st order and reactant B is 1st order? (1 point ) *

Not enough information

Rate= k

Rate= k [A] [B]

Rate= k [B]^1

Question 13

What is the rate law of a chemical reaction whose reactant A is 1st order, reactant B is 2nd order and reactant C is 0th order? (1 point ) *

Not enough information

Rate= k [A] [B]^2

Rate= k [A]^1 [C]^0

Rate= k [B]^3

Question 14

What is the rate law of a chemical reaction whose reactant A is 2nd order and reactant B is 1st order? (1 point ) *

Not enough information

Rate= k [A] [B]

Rate= k [A]^2 [B]^1

Rate= k [B]^2

Question 15

Suppose N2O5 is reacting at a rate of 0.027 M/s in the formation of nitrogen dioxide and molecular oxygen. What is the rate NO2 is being formed? (1 point ) *

-.0135 M/S

-.054 M/s

.003 M/s

.054 M/s

Question 16

Suppose N2O5 is reacting at a rate of .027 M/s during the formation of nitrogen dioxide and molecular oxygen. What is the rate at which molecular oxygen is being formed? (1 point ) *

-.0135 M/s

.027 M/s

0.0135 M/s

None of the above

Question 17

If molecular oxygen is being consumed at a rate of 0.0135 M/s when reacting with nitrogen dioxide in the formation of N2O5, what is the rate at which dinitrogen pentoxide is being formed? (1 point ) *

-0.0135 M/s

0.027 M/s

0.054 M/s

0.081 M/s

Question 18

Consider the reaction: NO2 + O2 --> N2O5. If molecular oxygen is reacting at a rate of 0.0135 M/s, at what rate is NO2 reacting? (1 point ) *

(-0.054 M/s)

-.0135 M/s

.0405 M/s

0.054 M/s

Question 19

What is the correct coefficient in the rate expression for nitrogen dioxide when it is reacted with molecular oxygen to form dinitrogen pentoxide? (1 point ) *

-(1/2)

-(1/8)

-0.25

2

Answer 1