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CHM 102 Practice Questions Objective Question
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Question

In the reaction of ethylene with H2O in the presence of sulfuric acid, which one adds across the double bond first?
Options
A H+
Correct Answer
B H.
C HO–
D sulfate ion
Correct Answer

Option A is the correct answer.

Detailed Explanation

In the acid-catalyzed hydration of ethylene, the electrophile H+ (from H2SO4) attacks the double bond first, forming a carbocation intermediate. Then water (not HO–) attacks the carbocation.

Hint

What attacks the double bond first in acid-catalyzed hydration?

Question Info

Course: CHM 102
Topic: Practice Questions
Type: Objective
Difficulty: Not specified
Question 1098 of 1999
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