CH-1107
Preparing salts
Chemistry · Secondary 4 · Medium · Preparing salts
A student wants to prepare soluble zinc sulfate using dilute sulfuric acid and solid zinc carbonate.
Which method will give the highest yield of pure zinc sulfate crystals?
Which method will give the highest yield of pure zinc sulfate crystals?
- Add excess zinc carbonate to warm dilute sulfuric acid, filter, then crystallise the filtrate.
- Add a limited amount of zinc carbonate to cold dilute sulfuric acid, then evaporate to dryness.
- Mix zinc carbonate with solid sodium sulfate, then heat strongly and cool.
- React zinc carbonate with dilute hydrochloric acid, then add sulfuric acid to the solution.
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