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The coagulation value in millimoles per ...

The coagulation value in millimoles per litre of the electrolyes used for the coagulation of `As_(2)S_(3)` are given below:
I. `(NaCl)=52` , II. `(BaCl_(2))=0.69`
III. `(MgSO_(4))=0.22`
The correct order of their coagulating power is

A

`I gt II gt III`

B

`II gt I gt III`

C

`III gt II gt I`

D

`III gt I gt II`

Text Solution

Verified by Experts

The correct Answer is:
C
Lower the coagulating power, higher is the coagulation value in millimoles per litre, i.e. coagulating power is inversely proportional to coagulation values. Thus, correct order of coagulating power is
`MgSO_(4) gt BaCl_(2) gt NaCl or III gt II gt I`
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