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KVPY2015ChemistrySome Basic Concepts of Chemistry

The percentage of nitrogen by mass in ammonium sulphate is closest to (atomic masses H =1, ~N =14, O =16, ~S =32)

Options

  1. A21 %
  2. B24 %
  3. C36 %
  4. D16 %

Correct answer

A. 21 %

Step-by-step solution

Ammonium sulphate ( NH ₄ )₂ SO ₄= % of nitrogen = 28 100 36+96 = 28 100 132 21.21 %

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