WAEC Chemistry 2025 Theory — Question 32
Question 32 of 70 from the West African Examinations Council (WAEC) Chemistry 2025 Theory paper, with the correct answer and a full explanation.
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3(b)(i). Drops of compound X are added to calcium oxide to produce compound Y. Y reacts with ammonium chloride on heating to produce gas Z, which turns damp red litmus paper blue. Identify X, Y and Z.
Model answer
X: Water (H2O). Y: Calcium hydroxide, Ca(OH)2. Z: Ammonia, NH3.
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