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JAMB Chemistry 2013 Question 50

Question 50

Introduction to Organic Chemistry

An organic compound contains 60% carbon, 13.3% hydrogen and 26.7% oxygen. Calculate the empirical formula. [C = 12, H = 1, O = 16]

  1. A.C5H12O.
  2. B.C3H8O.
  3. C.C6H13O2.
  4. D.C4H9O.
Show the answer and explanation

Answer: B (C3H8O.)

Explanation

C : H : O = 60/12 : 13.3/1 : 26.7/16 = 5 : 13.3 : 1.67 = 3 : 8 : 1, so C3H8O.