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Related Topic: Chlorine and its Compounds

Related Subtopic: Physical properties of chlorine



Questions 6.3

  1. State the colour and smell of chlorine gas.
  2. Comment on the solubility of chlorine in water.
  3. By comparing Relative Molecular Masses (RMM), show that chlorine (Cl2) is about two times denser than air. (Cl = 35.5; N = 14; O = 16; ignore rare gases.)


Answers to Questions 6.3


  1. Chlorine is pale yellow-green in colour, and it has a chocking and irritating smell.
  2. RMM of Cl2 = 35.5x2 = 71. This is about two times the average RMM of air, which is between 28 (for N2) and 32 (for O2).
  3. Chlorine is slightly soluble in water (That is how it forms HOCl(aq) and HCl(aq) with water).



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