Testing carbon dioxide with limewater IMG 0422
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- Опубліковано 25 січ 2022
- High School Chemistry
Video clip with sound, portrait orientation
Using limewater to test for carbon dioxide
Carbon dioxide is produced by reacting calcium carbonate with dilute hydrochloric acid in a test-tube.
The gas is sampled using a plastic dropping pipette and bubbled through limewater.
Limewater is a solution of calcium hydroxide, which is sparingly soluble in water.
The limewater produces a white precipitate of calcium carbonate on reacting with carbon dioxide gas.