passwella.
Menu

JAMB Chemistry 1984 Question 49

Question 49

Introduction to Organic Chemistry

The I.U.P.A.C name for the compound CH3—CH(CH3)—CH2—CH3 is

Diagram for this question
  1. A.isopropylethene
  2. B.acetylene
  3. C.3-methylbutane
  4. D.2-methylbutane
  5. E.5-methylpentane
Show the answer and explanation

Answer: D (2-methylbutane)

Explanation

The longest chain has four carbons (butane) with a methyl group on carbon 2 when numbered from the nearer end, so the name is 2-methylbutane.