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Co-ordination Compounds — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryCo-ordination Compounds1 Mark
Question
Define double salts with suitable examples.
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Answer

They usually contain two simple salts in equimolar proportions. A double salt dissociate completely into ions in aqueous solution.
$K _2 SO _4 . Cr _2\left( SO _4\right)_3 .24 H _2 O \longrightarrow 2 K^{+}+2 Cr ^{3+}$$+4 SO _4^{2-}+24 H _2 O$

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