Which ion forms a green precipitate with aqueous sodium hydroxide that dissolves in…

CHEMISTRY · Single correct · GCSE · Chemistry · Chemical Analysis · Chemical Analysis

Problem

Which ion forms a green precipitate with aqueous sodium hydroxide that dissolves in an excess of aqueous sodium hydroxide? (A)

\text{Ca}^{2+}

(B)

\text{Cr}^{3+}

(C)

\text{Cu}^{2+}

(D)

\text{Fe}^{2+}