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Which row of the table correctly matches the reactant and the product of an addition reaction? (A) CH₃ — CH₂ — CH₂ — OH CH₃ — CH = CH₂ (B) CH₃ — CH₂ — CH₃ CH₃ — CH = CH₃ (C) CH₃ — CH = CH₂ CH₃ — CH₂ — CH — CH₃ | Cl (D) CH₃ — C — O CH₃ — C — O | OH CH₃ - HSC - SSCE Chemistry - Question 5 - 2060 - Paper 1
Question 5
Which row of the table correctly matches the reactant and the product of an addition reaction? (A) CH₃ — CH₂ — CH₂ — OH CH₃ — CH = CH₂ (B) CH₃ — CH₂ — CH₃ ... show full transcript
Worked Solution & Example Answer:Which row of the table correctly matches the reactant and the product of an addition reaction? (A) CH₃ — CH₂ — CH₂ — OH CH₃ — CH = CH₂ (B) CH₃ — CH₂ — CH₃ CH₃ — CH = CH₃ (C) CH₃ — CH = CH₂ CH₃ — CH₂ — CH — CH₃ | Cl (D) CH₃ — C — O CH₃ — C — O | OH CH₃ - HSC - SSCE Chemistry - Question 5 - 2060 - Paper 1
Step 1
Which row of the table correctly matches the reactant and the product of an addition reaction?
Answer
To determine the correct answer, we need to identify what an addition reaction is. This type of reaction occurs when two reactants combine to form a single product without the loss of any atoms. In addition reactions involving alkenes, the double bond is broken and replaced with single bonds, allowing other atoms or groups to add across the double bond.
Now, let's analyze the options:
- (A): The reactant is an alcohol and the product does not reflect an addition reaction. Thus, this option is incorrect.
- (B): Both the reactant and product represent alkanes, making this not an addition reaction. Therefore, this option is also incorrect.
- (C): The reactant is an alkene (CH₃ — CH = CH₂) and the product shows the breaking of the double bond and the addition of a chlorine atom (Cl) across it, which is characteristic of an addition reaction. Hence, this option is correct.
- (D): This option indicates a reaction involving a carbonyl compound and does not represent an addition reaction either, hence it's incorrect.
Based on the above rationale, the correct answer is (C).