When ammonia is added to a cupric salt solution

CHEMISTRY · Single correct · A Level · Chemistry · Transition metals and their chemistry · Transition metals and their chemistry

Problem

When ammonia is added to a cupric salt solution, the deep blue colour is observed it is due to the formation of : (1)

[\text{Cu}(\text{OH})_4]^{2-}

(2)

[\text{Cu}(\text{NH}_3)_4]^{2+}

(3)

[\text{Cu}(\text{H}_2\text{O})_2(\text{NH}_3)_2]^{2+}

(4)

[\text{Cu}(\text{H}_2\text{O})_4]^{2+}