CH-1646

Tests for cations

Chemistry · Secondary 4 · Easy · Tests for cations

A solution of iron(II) sulfate is pale green. Aqueous sodium hydroxide is added until in excess.
What is observed?

A green precipitate forms and remains insoluble in excess
A blue precipitate forms and dissolves in excess
A brown precipitate forms and remains insoluble in excess
No visible change is seen

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