CH-673
Tests for gases
Chemistry · Secondary 3 · Easy · Tests for gases
A gas sample is suspected to be carbon dioxide. Which test and observation would confirm its identity?
- Bubble the gas through limewater; it turns milky.
- Insert a glowing splint; it relights.
- Hold damp red litmus paper; it turns blue.
- Bring a lighted splint; it pops.
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