Which gas is produced when magnesium reacts with dilute hydrochloric acid, and how is it tested?
Answer and explanation
Correct answer: C. Hydrogen, which gives a squeaky pop with a lit splint
- Step 1: Metal + acid → salt + hydrogen.
- Step 2: Hydrogen burns with a squeaky pop in a lit splint test.
Answer
Hydrogen, which gives a squeaky pop with a lit splint.
Why not the others: Oxygen, which relights a glowing splint: oxygen is not produced. Carbon dioxide, which turns limewater milky: this comes from carbonates. Chlorine, which bleaches litmus: no chlorine is released.
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