In a coagulation experiment, `5mL` of `As_(2)S_(3)` is mixed with distilled water and `0.1M` solution of an electrolyte `AB` so that the total volume is `10mL` . It was found that all solutions sontianing more than `4.6mL` . Of `AB` coagulate within `5` min. What is the flocculation value of `AB` for `As_(2)S_(3)` solution?

Explanation

A minimum of `4.6mL` of `AB` is required to coagulation the solution. The moles of `AB` in the sol is
`=(4.6xx0.1)/(10)=0.046mol`
This means that a minimum of `0.046mol` or `0.046xx1000=46` m mol are required coagulating `1L` of solution.
Flocculation value of `AB` for `As_(2)S_(3)sol=46`