CH-1348
Collecting gases
Chemistry · Secondary 4 · Medium · Collecting gases
A gaseous mixture of carbon dioxide and hydrogen is passed through two successive wash bottles. After the gases leave the second bottle, only dry hydrogen remains.
Which pair of substances should be placed in the bottles (X then Y)?
Which pair of substances should be placed in the bottles (X then Y)?
- water, concentrated sulfuric acid
- aqueous sodium hydroxide, concentrated sulfuric acid
- limewater, water
- concentrated sulfuric acid, aqueous sodium hydroxide
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