JAMB Chemistry 2025 Objective — Question 11
Question 11 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2025 Objective paper, with the correct answer and a full explanation.
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Chlorine gas bubbled into cold dilute NaOH produces a solution of
- A. NaClO₃ and NaCl
- B. NaClO and NaClCorrect
- C. NaClO₃ and HCl
- D. NaCl and HCl
Explanation
Cl₂ + 2NaOH → NaCl + NaClO + H₂O (cold, dilute NaOH). With hot concentrated NaOH: 3Cl₂ + 6NaOH → 5NaCl + NaClO₃ + 3H₂O.
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