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In an experiment, 2.4 g of iron oxide on reduction with hydrogen gave 1.68 g of iron. In another experiment, 2.9 g of iron oxide gave 2.09 g of iron on reduction. Which law is illustrated from the above data?

Options

  1. ALaw of constant proportions
  2. BLaw of multiple proportions
  3. CLaw of conservation of mass
  4. DLaw of reciprocal proportions

Correct answer

A. Law of constant proportions

Step-by-step solution

In first experiment, 24 g of iron oxide gave 1.68 g of iron. Mass of iron oxide = 2.4 g Mass of iron = 1.68 g Mass of oxygen = 2.4 - 1.68 = 0.72 Ratio of masses of iron and oxygen = 1.68 0.72 = 7 : 3 In second experiment, Mass of iron oxide = 2.9 g Mass of iron = 2.09 g Mass of oxygen = 2.9 - 2.09 = 0.81 Ratio of masses of iron and oxygen = 2.09 0.81 = 7 : 3

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