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WAEC - Chemistry (1988 - No. 33)
When copper (ll) chloride solution is treated with excess aqueous ammonia, a deep blue solution results This is due to the presence of
(CuNH
4
)
3+
ions
(CuCI
4
)
2-
ions
[Cu(OH)
4
]
2-
ions
Cu(H
2-
O)
4
2+
IONS
[cU(NH
3
)
4
]
ions
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