Which of the following is a complex salt ?

Potassium aluminium sulphate

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Ammonium iron (II) sulphate

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Carnallite

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Potassium ferrocyanide

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Solution

The correct option is D Potassium ferrocyanide
Potassium ferrocyanide, $K_{4} [F e (C N_{6})]$ , is a complex salt that does not dissociate into $F e^{2 +}$ and $C N^{-}$ ions when dissolved in water. The other three i.e potash alum, carnallite and Mohr's salt are double salt that dissociate into simple ions completely when dissolved in water.

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Similar questions

N H_{3}

[N i {(N H_{3})}_{6}] B r_{2}

Name :

(a) a chloride which is insoluble in cold water but dissolves in hot water,

(b) a chloride which is insoluble,

(d) a basic salt,

(e) an acidic salt,

(f) a mixed salt,

(g) a complex salt,

(h) a double salt,

(i) a salt whose solubility increases with temperature,

(j) a salt whose solubility decreases with temperature.

Which of the following salts is not used in a salt bridge?

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