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

Options

A. `IgtIIgtIII`
B. `IIgtIgtIII`
C. `IIIgtIIgtI`
D. `IIIgtIgtII`

Answer

C

Explanation

For electrolytes, according to hardy-schulze rule:
Coagulating power `xx(1)/("Coagulation value")`
Thus, the correct order is
`{:(MgSO_(4),gt,BaCl_(2),gt,NaCl),((III),,(II),,(I)):}`