Which gas is produced when dilute hydrochloric acid reacts with zinc?
Answer and explanation
Correct answer: B. Hydrogen
- Step 1: Metal + acid gives a salt and hydrogen. Answer: Hydrogen. Why not the others: Oxygen: Oxygen is not produced in a reaction between an acid and a metal. Carbon dioxide: Carbon dioxide forms from carbonates, not metals. Chlorine: The chloride ions stay in the solution as zinc chloride.
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