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Qualitative Analysis: Cations
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Group III cations (Fe, Al, Cr)
NEET level
Single correct option
Difficulty 1 of 3
qc186
Addition of
NH
X
4
OH
(with
NH
X
4
Cl
) to
AlCl
X
3
solution gives
A
a deep blue solution
B
no precipitate
C
a green precipitate of
Al
(
OH
)
X
3
D
a gelatinous white precipitate of
Al
(
OH
)
X
3
Answer: D
Al
X
3
+
+
3
NH
X
3
+
3
H
X
2
O
Al
(
OH
)
X
3
+
3
NH
X
4
X
+
. Aluminium hydroxide is white and gelatinous, and does not dissolve in excess ammonia.
Practice Qualitative Analysis: Cations
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