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Which of the following is not isomorphou...

Which of the following is not isomorphous with true alum and is called pseudoalum ?

A

`K_(2)SO_(4).Al_(2)(SO_(4))_(3).24H_(2)O`

B

`FeSO_(4).Al_(2)(SO_(4))_(3).24H_(2)O`

C

`K_(2)SO_(4).Cr_(2)(SO_(4))_(3).24H_(2)O`

D

`(NH_(4))_(2)SO_(4).Fe_(2)(SO_(4))_(3).24H_(2)O`

Text Solution

Verified by Experts

The correct Answer is:
B
`FeSO_(4).Al_(2)(SO_(4))_(3).24H_(2)O` is called Pseudoalum Alum are `M_(2)SO_(4).M'_(2)(SO_(4))_(3).24H_(2)O`
where M = Monovalent metal
M = Trivalent metal.
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