WAEC Chemistry 2023 Objective — Question 17
Question 17 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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Why are H2SO4 and CaCl2 not suitable for drying ammonia gas? They
- A. are poisonous
- B. are corrosive
- C. react with the gasCorrect
- D. pollute the gas
Explanation
H2SO4 and CaCl2 are not suitable for drying ammonia because they react with the gas. As a rule, an alkaline gas should not be dried with an acidic substance, and an acidic gas should not be dried with an alkaline substance.
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