MediumNEET TEST
+4 / -1
Which of the following will not give tests for all the ions present in its aqueous solution?
A
FeCl3
B
K4[Fe(CN)6]
C
(NH4)2Fe(SO4)2·6H2O
D
KAl(SO4)2·12H2O
Explanation
Double salts and simple salts dissociate completely in water and show tests for all constituent ions, but a complex salt retains its complex ion. Thus K4[Fe(CN)6] gives K+ and [Fe(CN)6]4–, not separate Fe2+ and CN– tests.
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