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JAMB Chemistry 1981 Question 50

Question 50

Introduction to Organic Chemistry

The general formula of an alkyl halide (which X represents the halide) is

  1. A.CnH2n−2X
  2. B.CnH2n+1X
  3. C.CnH2n+2X
  4. D.CnH2nX
  5. E.CnH2n−1
Show the answer and explanation

Answer: B (CnH2n+1X)

Explanation

An alkyl group is an alkane minus one H, CnH2n+1, so an alkyl halide is CnH2n+1X.