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?

Answer

5

Explanation

A minimum of 5 ml of AB is required to coagulate the sol, the moles of AB in sol. Is `=(5xx0.01)/10=0.005` moles
this means that a minimum of 0.005 moles or `0.005xx1000=5` milli moles are required for coagulation 1 litre of sol. Flocculation value of AB for `As_2S_3` sol=5