CH-39
Preparing salts
Chemistry · Secondary 3 · Medium · Preparing salts
A student wants to prepare pure crystals of copper(II) sulfate by reacting excess copper(II) oxide with dilute sulfuric acid. After filtration, what should the student do next to obtain dry crystals?
- Heat the filtrate to evaporate some water, then cool to crystallise the salt.
- Boil the filtrate to dryness to obtain the salt directly.
- Add more copper(II) oxide until no more dissolves, then filter again.
- Cool the filtrate in an ice bath and then distil it.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.