CH-1608
Tests for cations
Chemistry · Secondary 4 · Easy · Tests for cations
A colourless solution contains only one type of positive ion. When aqueous sodium hydroxide is added, a blue precipitate forms which is insoluble in excess sodium hydroxide.
Which ion is present?
Which ion is present?
- Cu²⁺
- Fe²⁺
- Fe³⁺
- Zn²⁺
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