JAMB Chemistry 2021 Objective — Question 18

Question 18 of 41 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2021 Objective paper, with the correct answer and a full explanation.

The catalyst that is used to speed up the rate of the thermal decomposition of KClO₃ is

A. Nickel
B. V₂O₅
C. MnO₂Correct
D. Fe

Explanation

2KClO₃ →(MnO₂, Δ)→ 2KCl + 3O₂. MnO₂ (manganese dioxide) catalyses this decomposition reaction. V₂O₅ catalyses SO₂ oxidation in the Contact Process.

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