CH-1346
Collecting gases
Chemistry · Secondary 4 · Medium · Collecting gases
A gaseous mixture of carbon dioxide and water vapour is passed through two successive drying tubes. After the gases pass through substance P, only carbon dioxide and water vapour remain. After passing through substance Q, dry carbon dioxide is obtained.
Which row shows the correct identities of P and Q?
Which row shows the correct identities of P and Q?
- P: water, Q: concentrated sulfuric acid
- P: limewater, Q: concentrated sulfuric acid
- P: water, Q: aqueous sodium hydroxide
- P: limewater, Q: aqueous sodium hydroxide
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