CH-1379
Collecting gases
Chemistry · Secondary 4 · Medium · Collecting gases
A gaseous mixture of nitrogen and carbon dioxide is passed through two successive wash bottles. After the gases pass through substance P, only nitrogen and water vapour remain. After passing through substance Q, dry nitrogen is obtained.
Which row shows the correct identities of substances P and Q?
Which row shows the correct identities of substances P and Q?
- P: water Q: concentrated sulfuric acid
- P: aqueous sodium hydroxide Q: concentrated sulfuric acid
- P: water Q: aqueous sodium hydroxide
- P: limewater Q: water
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