Transition Metals General Features Page 2
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2C h e m g u i d e – q u e s t i o n s
4. Copper forms three common complex ions: [Cu(H
O)
]
2+
, [Cu(NH
)
(H
O)
]
2+
and [CuCl
]
2-
.
2
6
3
4
2
2
4
a) What is the general name given to groups such as water, ammonia or chloride ions which
surround the central metal ion?
b) How are these groups bound to the central metal ion?
c) What colours are the [Cu(H
O)
]
2+
and [Cu(NH
)
(H
O)
]
2+
ions?
2
6
3
4
2
2
5. Transition metals and their compounds are frequently used as catalysts.
a) Name the catalyst in the Haber Process for the manufacture of ammonia.
b) Name the catalyst used in the hydrogenation of carbon-carbon double bonds.
c) Name the catalyst in the Contact Process for the manufacture of sulphuric acid.
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