Which gas is produced when magnesium reacts with dilute hydrochloric acid?
Answer and explanation
Correct answer: D. hydrogen
- Step 1: A metal reacting with an acid gives a salt and hydrogen. Step 2. Mg + 2HCl MgCl + H. Answer: hydrogen. Why not the others: Oxygen is not released when a metal reacts with an acid, carbon dioxide is produced when an acid reacts with a carbonate, and the chlorine stays in the salt magnesium chloride.
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