First slide

Comparision of double salt and complex

Question

Some salts although containing two different metallic elements give test for one of them in solution. Such salts are:

Easy

A

double salts
B

complex salts
C

normal salts
D

none of these

Solution

Complex compounds or complex salts containing two different metallic elements give test for only one element. For example, potassium hexacyanoferrate (II), K₄[Fe(CN)₆] gives test only for K⁺ ions and not for Fe²⁺ ions.
$K_{4} (Fe {(CN)}_{6}) ⇌ 4 K^{+} + {[Fe {(CN)}_{6}]}^{4 -}$

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