# Test Your Chemistry Knowledge Now

13 Questions | Total Attempts: 45  Settings  How strong are your fundamentals of Chemistry? Can you prove your knowledge? How about you take an online test and show us how much you know. So, let's get started.

• 1.
Select the factors that affect the reaction rate:
• A.

Physical state reactants

• B.

Presence of a catalyst

• C.

Reactant concentration

• D.

All of the above

• 2.
The rate of the appearance of NO2=6 molar/sec what is the rate of appearance of O2?
• A.

1/2

• B.

-1/2

• C.

24

• D.

-24

• 3.
Rate of appearance of NO2=6molar/sec, what is the rate of disappearance of N2O5
• A.

-3

• B.

3

• C.

12

• D.

-12

• 4.
If you have the equation below determine the relationship between the disappearance ofN2O5 and the appearance of O2
• A.

-1/2(N2O5/t)=O2/t

• B.

1/2(N2O5/t)=-O2/t

• C.

(N2O5/t)=-1/2(O2/t)

• D.

(N2O5/t)=O2/t

• 5.
Rate=k[A]^x[B]^y If X=1 and Y=2 what is the overall order of the reaction?
• A.

2

• B.

3

• C.

1

• D.

Non of the above

• 6.
If you have the following data: identify the order of y?
• A.

2

• B.

1

• C.

3

• D.

Non of the above

• 7.
If k[3A]^x and the rate law is 27k[A]^x what is the order of x?
• A.

1

• B.

3

• C.

2

• D.

0

• 8.
Calculate the rate constant of this reaction:
• A.

1.2*10^4 M^-1.s^-2

• B.

1.2*10^4 M^-2.s^-1

• C.

2.4*10^4 M^-1.s^-2

• D.

2.4*10^4 M^-2.s^-1

• 9.
What is the rate of the reaction when [No]=0.15M and [Br2]= 0.25M  hints: you need to find x and y first. k=1.2*10^4 M^-2.s^-1
• A.

67.5M.s^-1

• B.

67.5M.s

• C.

64.5M.s^-1

• D.

64.5M^-1.s

• 10.
Which of the following equations is a first order equation?
• A.

1/[A]t=kt+1/[A]0

• B.

[A]t=-kt+[A]0

• C.

[A]t=kt-[A]0

• D.

Ln[A]t=-kt+ln[A]0

• 11.
The reaction 2A=B has a rate constant of 2.8*10^-2 s^-1 at 80c, How long will it take for A to decrease from 0.88M to 0.14M. Fine the order of A
• A.

66s , 1st order

• B.

66s ,0th order

• C.

65.8s , 2nd order

• D.

100s, 1st order

• 12.
The higher the activation energy is the slower the reaction gets.
• A.

True

• B.

False

• 13.
What is the relationship between the rate and each of the following depending on Arrhenius equation: 1)T 2)A 3)Ea
• A.

1)increases  2)increases  3)decrease

• B.

1)increases  2)decrease   3)decrease

• C.

1)increases  2)increases  3)increase

• D.

1)decreases   2)increases  3)decrease

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