WorksheetsRadical Halogenation of Alkanes
Total questions: 7
Worksheet time: 7mins
Name
Class
Date
1.
Which of the following is not true of free-radical halogenation reactions?
a)
Fluorine is more reactive than chlorine in these reactions.
b)
Bromine is more selective than chlorine.
c)
The reactions require either light or high temperatures to proceed.
d)
Brominations are faster than chlorinations.
2.
The order of radical stability is:
a)
3° > 2° > 1° > Me
b)
3° < 2° < 1° < Me
c)
all are about equal in stability
d)
Me > primary
3.
Which of the following is true for an early transition state?
a)
The starting materials resemble the products.
b)
The reaction proceeds very slowly.
c)
The transition state resembles the reactants.
d)
The transition state resembles the products.
4.
Which, if any, of the following would you choose to accomplish the reaction shown above in the best yield?
a)
F2, light
b)
Cl2, light
c)
Br2, light
d)
I2, light
5.
Which is most true about the function of a catalyst?
a)
Catalysts speed up the reaction by lowering the transition state of a reaction.
b)
Catalysts usually need higher temperatures to promote reactions.
c)
Catalysts lower the energies of the reactants.
d)
Catalysts lower the energies of the products.
6.
Rank the above radicals in decreasing order of stability.
a)
3 > 4 > 2 > 1
b)
3 > 2 > 4 > 1
c)
2 > 3 > 4 > 1
d)
2 > 4 > 3 > 1
7.
How many different products will result if radical monobromination of the above compound only occurs at 3° carbons.
a)
1
b)
2
c)
3
d)
4
100 %
