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WAEC Chemistry 2023 Objective — Question 18

Question 18 of 50 from the West African Examinations Council (WAEC) Chemistry 2023 Objective paper, with the correct answer and a full explanation.

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

  • A. H2S + Cl2 → 2HCl + S
  • B. Cl2 + 2NaOH → NaCl + NaClO + H2O
  • C. Cl2 + 2NaF → 2NaCl + F2Correct
  • D. Ca(OH)2 + Cl2 → CaOCl2 + H2O

Explanation

Fluorine is more reactive than chlorine, so chlorine cannot displace fluorine from sodium fluoride, as portrayed in option C.

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