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Question

The coagulation values in millimoles per litre of the electrolytes used for the coagulation of As2S3 are given below:
I. (NaCl)=52, II. (BaCl2)=0.69, III. (MgSO4)=0.22
The correct order of their coagulating power is

A
I > II > III
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B
II > I > III
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C
III > II > I
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D
III > I > II
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Solution

The correct option is C III > II > I
Coagulating power 1Coagulation value
Lower the coagulation value, higher is the coagulating power so, the correct order is :
MgSO4(III)>BaCl2(II)>NaCl(I)

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