Question 10 of 34intermediate🔧 ApplyShort Answer2 marks

Classify the following reactions in one of the reaction type studied in this unit. (a) CH₃CH₂Br + HS⁻ → CH₃CH₂SH + Br⁻ (b) (CH₃)₂C = CH₂ + HCl → (CH₃)₂CCl - CH₃ (c) CH₃CH₂Br + HO⁻ → CH₂ = CH₂ + H₂O + Br⁻ (d) (CH₃)₃C-CH₂OH + HBr → (CH₃)₂CBrCH₂CH₂CH₃ + H₂O

(a)
Answer

Nucleophilic substitution

(b)
Answer

Addition

(c)
Answer

Elimination

(d)
Answer

Rearrangement

Explanation

Organic reactions are broadly classified into substitution, addition, elimination, and rearrangement reactions. In (a), the nucleophile HS−HS^- replaces the halogen, making it a nucleophilic substitution. In (b), HClHCl adds across a double bond, making it an addition reaction. In (c), elements are removed to form a double bond, classifying it as an elimination reaction. In (d), the carbon skeleton changes during the reaction, indicating a rearrangement reaction.

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