CH-116
Preparing salts
Chemistry · Secondary 3 · Medium · Preparing salts
A student adds excess copper(II) carbonate to dilute sulfuric acid and warms the mixture. Which method is used next to obtain pure dry crystals of copper(II) sulfate?
- Filter, then cool the filtrate directly without heating.
- Evaporate to dryness and crush the solid formed.
- Filter, heat the filtrate to concentrate it, then cool to crystallise.
- Distil the solution to separate copper(II) sulfate from water.
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