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Which of the following equations does not illustrate correctly one of the reactions of chlorine?

Chemistry
WAEC 2023

Which of the following equations does not illustrate correctly one of the reactions of chlorine?

  • A. \(Ca(OH)_2 + Cl_2 → CaOCl_2 + H_2O\)
  • B. \(Cl_2 + 2NaF → 2NaCl + F_2\)
  • C. \(Cl_2 + 2NaOH → NaCl + NaClO + H_2O\)
  • D. \(H_2S + Cl_2 → 2HCl + S\)
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Correct Answer: Option B
Explanation

The equation \(Cl_2 + 2NaF → 2NaCl + F_2\) does not illustrate correctly one of the reactions of chlorine.

In this reaction, chlorine reacts with sodium fluoride to form sodium chloride and fluorine gas. However, this reaction is not possible because fluorine is a much more reactive element than chlorine. When chlorine and fluorine react, they form a compound called chlorine trifluoride (\(ClF_3)\), which is a very powerful oxidizing agent.


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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789