Question

For the coagulation of 50 ml of ferric hydroxide sol, 10 ml of 0.5 M KCl is required. What is the coagulation value of $KCl$?

• A. 5
• B. 10
• C. 100
• D. None of these

Answer 1

The correct option is C 100

$Coagulationvalue=\frac{Numberofmillimolesofelectrolyterequired}{Volumeofcolloidalsolution\left(inlitre\right)}$
$=\frac{10\times 0.5}{50}\times 1000$
$=100$