Question #1:  Classify the following step from a free radical chain mechanism:

Question #2: Which of the two radicals below is more stable?

Question #3: Classify the following step from a free radical chain mechanism:

Question #4: Which of the two radicals below is more stable?

Question #5: Classify the following step from a free radical chain mechanism:

Question #6: Which of the following reactive intermediates are sp³ hybridized?

    1.  carbanion
    2.  singlet carbene
    3.  carbocation
    4.  alkyl radical

Question #7: Which of the following statements are true about free radical reactions?

1.  Chlorination of ethane occurs at a faster rate than bromination of ethane.
2.  Bromination of butane occurs at a faster rate than bromination of isobutane.
3.  Iodination of propane occurs at a rate that is too slow to be a useful synthetic reaction.
4.  Bromination of butane will produce one major product and one minor product. 

Question #8:   Which of the following statements are true?

1.  Transition state complexes can be detected by certain laboratory instruments.
2.  Transition state complexes exist at localized energy minima on the reaction energy graph.
3.  Highly endothermic reactions have late transition states.
4.  Early transitions states are more "reactant-like". 

Question #9: Which of the following reactive intermediates are positively charged?

    1.  carbanion
    2.  singlet carbene
    3.  carbocation
    4.  alkyl radical

Question #10:  Classify the following step from a free radical chain mechanism:

Question #11:  Which of the following reactive intermediates are negatively charged?

    1.  carbanion
    2.  singlet carbene
    3.  carbocation
    4.  alkyl radical

Question #12: Which of the two radicals below is more stable?

Question #13: Reaction intermediates that have an unpaired electron are called:

Question #14: Which of the following reactive intermediates are sp² hybridized?

    1.  carbanion
    2.  singlet carbene
    3.  carbocation
    4.  alkyl radical

Question #15: Which of the two radicals below is more stable?

Question #16: How many monochlorination products are produced when 2,2,4-trimethylpentane undergoes free radical chlorination?

Question #17:  Which of the following reactive intermediates are electron deficient?

    1.  carbanion
    2.  singlet carbene
    3.  carbocation
    4.  alkyl radical

Question #18: Which of the following reactive intermediates have a net charge of zero?

    1.  carbanion
    2.  singlet carbene
    3.  carbocation
    4.  alkyl radical

Question #19: How many monochlorination products are produced when 1-bromo-2,2,4-trimethylpentane undergoes free radical chlorination?

Question #20: Which of the two radicals below is more stable?