In an experiment, addition of `4.0mL` of `0.005MBaCl_(2)` to `16.0mL` of arsenious sulphide sol just cause the complete coagulation in `2h` . The flocculating value of the effective ion is:

Options

A. Cl,1
B. Cl,2
C. `[S_2nC^4`
D. `[S_2n_3c^2`

Explanation

`A_2S_3C`Sol is negatively charged owing to preferential adsorption of`S^(2-)` ions. Cation would be the effective ion in coagulation. Flocculating value = minimum milli mol of the effective ion per litre of
`(40.00^3)/(4+16)5/1`