In a coagulation experiment, 10 mL of a colloid (X) is mixed with distilled water and 0.1M solution of an electrolyte AB so that the volume is 20 mL. It was found that all solutions containing more than 6.6 mL of AB coagulate within 5 minutes. What is the flocculation values of AB for sol (X)?

Explanation

A minimum of 6.6 ml of AB is required to coagulated the sol.
The number of moles of AB in the sol is ` = (6.6 xx 0.1)/(20)`
` = 0.033` moles
This means that minimum of 0.033 moles or 33 millimoles are required to coagulate 1 litre of sol.
`therefore ` Flocculating value of AB for sol = 33.