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:
1
III > I > II
2
I > II > III
3
II > I > III
4
III > II > I