Which gas is released when zinc reacts with dilute hydrochloric acid?
Answer and explanation
Correct answer: D. Hydrogen
- Step 1: Zinc is an electropositive transition metal situated above hydrogen in the activity series, allowing it to reduce hydronium ions in dilute mineral acids.
- Step 2: The single replacement reaction is represented by .
- Step 3: Effervescence during this reaction is caused by the release of hydrogen gas.
Answer
Hydrogen.
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