CH-1130
Preparing salts
Chemistry · Secondary 4 · Hard · Preparing salts
A student wants to prepare a pure dry sample of barium sulfate, BaSO₄, using barium nitrate solution and sulfuric acid.
Which method should be used?
Which method should be used?
- Mix the two solutions, filter, wash the residue, then dry it
- Add excess barium nitrate solid to sulfuric acid, then evaporate and crystallise
- Titrate barium nitrate with sulfuric acid, then evaporate the filtrate to dryness
- Mix the two solutions, evaporate to dryness, then crush the solid
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