Organic Chemistry Reactions &
Mechanisms Exam With Detailed
Questions And Correct
Answers||Latest Exam 2026/2027
||Already Graded A+
What free radical is most is likely to be formed from bromination? -ANSWER A tertiary
radical (Most stable)
Combustion -ANSWER
Pyrolysis (Cracking) -ANSWER
What are nucleophiles? -ANSWER Electron-rich species that are attracted to a positively
polarized atom (i.e. a carbonyl carbon)
What is a better nucleophile I or F? -ANSWER Flourine
What is a better leaving group I or F? -ANSWER Iodine
Sn1 Reaction -ANSWER
What doesn't a nucleophile play a role in the rate of an Sn1 reaction? -ANSWER It is not
involved in the rate-determining step...the formation of the carbocation.
What factors will help carbocation formation and therefore increase the rate of an Sn1
reaction? -ANSWER 1. Highly substituted carbons.
2. Polar solvents (Surround and isolate the carbocation)
3. Good leaving groups (Weak bases)
Sn2 Reaction -ANSWER
Why is a Sn2 reaction bimolecular? -ANSWER Its rate-determining step is dependent on
TWO species; both the substrate and the nucleophile.
What are the best conditions for an Sn2 reaction? -ANSWER You must have a strong
nucleophile for the backside attack (thats what she said) with no steric hindrance.
With respect to optical activity, what do your end products of Sn1 and Sn2 reactions
become? -ANSWER Sn1 = racemic mixture (nucleophile can attack from either the top
or the bottom of the planar carbocation), therefore loss of optical activity.
, Sn2 = inversion of configuration and remains optically active.
What role does tosylate usually play in reactions? -ANSWER It usually acts as a good
leaving group and a good protecting group.
Catalytic Hydrogenation -ANSWER
Addition of HX to an alkene -ANSWER
Addition of X2 to alkene -ANSWER
Addition of H2O to alkene -ANSWER
Free Radical Addtion to alkene -ANSWER
Hydroboration -ANSWER
Oxidation with KMnO4 (Cold) -ANSWER
Oxidation with KMnO4 (Hot) -ANSWER
Ozonolysis -ANSWER
Ozonolysis with Reduction -ANSWER
Peroxycarboxylic acids -ANSWER
What do you use to add to polymers? -ANSWER
Whats another word for ethyne? -ANSWER acetylene
Synthesis of Alkyne starting from dihalide -ANSWER
Synthesis of Alkyne using acytelide ion -ANSWER
Alkyne Reduction -ANSWER
Alkyne Reduction by free radical -ANSWER
Oxidation of Alkyne by KMnO4 -ANSWER
Ozonolysis of Alkyne -ANSWER
Hydroboration of Alkyne -ANSWER
Mechanisms Exam With Detailed
Questions And Correct
Answers||Latest Exam 2026/2027
||Already Graded A+
What free radical is most is likely to be formed from bromination? -ANSWER A tertiary
radical (Most stable)
Combustion -ANSWER
Pyrolysis (Cracking) -ANSWER
What are nucleophiles? -ANSWER Electron-rich species that are attracted to a positively
polarized atom (i.e. a carbonyl carbon)
What is a better nucleophile I or F? -ANSWER Flourine
What is a better leaving group I or F? -ANSWER Iodine
Sn1 Reaction -ANSWER
What doesn't a nucleophile play a role in the rate of an Sn1 reaction? -ANSWER It is not
involved in the rate-determining step...the formation of the carbocation.
What factors will help carbocation formation and therefore increase the rate of an Sn1
reaction? -ANSWER 1. Highly substituted carbons.
2. Polar solvents (Surround and isolate the carbocation)
3. Good leaving groups (Weak bases)
Sn2 Reaction -ANSWER
Why is a Sn2 reaction bimolecular? -ANSWER Its rate-determining step is dependent on
TWO species; both the substrate and the nucleophile.
What are the best conditions for an Sn2 reaction? -ANSWER You must have a strong
nucleophile for the backside attack (thats what she said) with no steric hindrance.
With respect to optical activity, what do your end products of Sn1 and Sn2 reactions
become? -ANSWER Sn1 = racemic mixture (nucleophile can attack from either the top
or the bottom of the planar carbocation), therefore loss of optical activity.
, Sn2 = inversion of configuration and remains optically active.
What role does tosylate usually play in reactions? -ANSWER It usually acts as a good
leaving group and a good protecting group.
Catalytic Hydrogenation -ANSWER
Addition of HX to an alkene -ANSWER
Addition of X2 to alkene -ANSWER
Addition of H2O to alkene -ANSWER
Free Radical Addtion to alkene -ANSWER
Hydroboration -ANSWER
Oxidation with KMnO4 (Cold) -ANSWER
Oxidation with KMnO4 (Hot) -ANSWER
Ozonolysis -ANSWER
Ozonolysis with Reduction -ANSWER
Peroxycarboxylic acids -ANSWER
What do you use to add to polymers? -ANSWER
Whats another word for ethyne? -ANSWER acetylene
Synthesis of Alkyne starting from dihalide -ANSWER
Synthesis of Alkyne using acytelide ion -ANSWER
Alkyne Reduction -ANSWER
Alkyne Reduction by free radical -ANSWER
Oxidation of Alkyne by KMnO4 -ANSWER
Ozonolysis of Alkyne -ANSWER
Hydroboration of Alkyne -ANSWER
