CH-1022
Preparing salts
Chemistry · Secondary 4 · Medium · Preparing salts
A student wants to prepare pure, dry crystals of copper(II) sulfate from dilute sulfuric acid and excess copper(II) oxide powder.
1: Heat the filtrate to concentrate the solution.
2: Add excess copper(II) oxide to the acid.
3: Filter the mixture to remove excess solid.
4: Cool the hot solution to crystallise.
In which order should these steps be carried out?
1: Heat the filtrate to concentrate the solution.
2: Add excess copper(II) oxide to the acid.
3: Filter the mixture to remove excess solid.
4: Cool the hot solution to crystallise.
In which order should these steps be carried out?
- 2, 3, 1, 4
- 2, 1, 3, 4
- 3, 2, 1, 4
- 4, 2, 3, 1
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