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JAMB Chemistry 1981 Question 31

Question 31

Chemical Formulae and Equations

In an experiment 5.00 g of a metal gave 10.59 g of its chloride. In another experiment, 1.50 g of the same metal combined with 1.68 g of chlorine. The above data illustrates

  1. A.Law of Conservation of Mass
  2. B.Law of Definite Proportion
  3. C.Law of Multiple Proportion
  4. D.Gay Lussac's Law
  5. E.Avogadro's Law
Show the answer and explanation

Answer: B (Law of Definite Proportion)

Explanation

Chlorine per gram of metal is 5.59/5.00 = 1.12 in the first experiment and 1.68/1.50 = 1.12 in the second. The same fixed ratio shows the law of definite proportions.