WAEC Chemistry 2020 Objective — Question 19
Question 19 of 50 from the West African Examinations Council (WAEC) Chemistry 2020 Objective paper, with the correct answer and a full explanation.
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Which of the following solids would not decompose on heating? A. Ammonium chloride B. Lead (II) trioxocarbonate (V) C. Potassium trioxocarbonate (IV) D. Sodium hydrogen trioxocarbonate (IV)
- A. Ammonium chloride
- B. Lead (II) trioxocarbonate (V)
- C. Potassium trioxocarbonate (IV)Correct
- D. Sodium hydrogen trioxocarbonate (IV)
Explanation
Ammonium chloride, lead (II) trioxonitrate (V), and sodium hydrogen trioxocarbonate (IV) decompose on heating, while potassium trioxocarbonate (IV) does not.
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