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Qualitative Analysis: Cations
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Group V and VI cations (Ba, Sr, Ca, Mg) and NH4+
JEE Main level
One or more correct options
Difficulty 2 of 3
qc212
Which cations are precipitated as carbonates by
(
NH
X
4
)
X
2
CO
X
3
in presence of
NH
X
4
Cl
and
NH
X
4
OH
?
A
Ba
X
2
+
B
Sr
X
2
+
C
Ca
X
2
+
D
Mg
X
2
+
Answer: A, B, C
BaCO
X
3
,
SrCO
X
3
and
CaCO
X
3
precipitate in the buffered medium;
Mg
X
2
+
is retained in solution by the ammonium salts and is tested in group VI.
Practice Qualitative Analysis: Cations
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