Chemistry · Chemical Reactions
In a laboratory demonstration, a student adds hydrochloric acid to sodium hydrogencarbonate and collects the gas. How can the student confirm it is carbon dioxide?
- 1It supports combustion.
- 2It forms a blue precipitate.
- 3It turns limewater milky.✓
- 4It extinguishes a burning splint.
Correct answer
It turns limewater milky.
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