CH-119
Preparing salts
Chemistry · Secondary 3 · Medium · Preparing salts
A student wants to prepare pure, dry crystals of copper(II) sulfate from dilute sulfuric acid and copper(II) oxide.
Which final step will give dry crystals?
Which final step will give dry crystals?
- Boil the crystals strongly until they turn white.
- Dry the crystals between sheets of filter paper.
- Add more water to dissolve all the crystals.
- Filter the hot solution to remove the crystals.
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