CH-1634
Tests for cations
Chemistry · Secondary 4 · Easy · Tests for cations
A solution produces a green precipitate with aqueous sodium hydroxide that is insoluble in excess. The same green precipitate forms with aqueous ammonia and is also insoluble in excess. Which cation is present?
- iron(II), Fe²⁺
- iron(III), Fe³⁺
- copper(II), Cu²⁺
- calcium, Ca²⁺
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