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The equivalent weight of potash alum (...

The equivalent weight of potash alum
`(K_(2)SO_(4).Al_(2)(SO_(4))_(3).24H_(2)O)` is

A

`M`

B

`(M)/(2)`

C

`(M)/(6)`

D

`(M)/(8)`

Text Solution

Verified by Experts

The correct Answer is:
B
Potash alum is a double salt.
`Total+"ve charge"=Total-"ve charge"`
`K_(2)^(2+)SO_(4)^(2-).Al_(2)^(+6)(SO_(4))_(3)^(-2xx3).24H_(2)O`
`Total+"ve charge"=8`
`Total-"ve-charge"=8`
`:. Ew=(M)/(8)`
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