Organic Chemistry Reactions Practice Problems

Consider the following reaction:

Identify this reaction as one of the following three types:

Consider the following reaction:

Identify this reaction as one of the following three types:

Consider the following reaction:

Identify this reaction as one of the following three types:

Consider the following reaction:

Identify this reaction as one of the following three types:

Identify whether the following reaction is an example of substitution, elimination, or neither. Recognize the nucleophiles and/or leaving groups involved in this reaction (if any).

a. CH₃—CH(Br)—CH₂(Br) + KI  →  CH₃—CH=CH₂ + IBr + KBr

Classify the given reaction as elimination or substitution. Also, point out the nucleophile or leaving group (if any).

Determine the stronger base between (i) and (ii). Rationalize your choice using the concept of element effect.

Choose the stronger base between 1 and 2. Justify your choice without the use of p  K_a values.

Choose the stronger acid between cyclohexylmethanol and cyclomethanethiol. Explain your answer in terms of element effects. 

Without knowing the pK_a values, identify the least basic structure among the given pair. Justify your choice.

Without knowing the pK_a values of the following structures, identify the least reactive base among them. Justify your choice.

Which of these anions is more basic?

F⁻ or I⁻

Without knowing the pK_a values, identify the more acidic member among the following pair. Justify your choice.

Without knowing the pK_a values of the following structures, identify the more reactive base among them. Justify your choice.

Draw the mechanism for the following conversion in the presence of an acid.

Explain why triazole (p K_a = 10.2) is a stronger acid compared to pyrazole (p K_a = 14.2).

Identify the given reaction as elimination, substitution, or neither.

Determine the leaving group involved, and if it is a substitution, specify the nucleophile participating in the reaction.