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Coagulation

For the coagu...

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 $K C l$ ?

A

5

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B

10

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C

100

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D

None of these

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Solution

The correct option is C 100
$C o a g u l a t i o n v a l u e = \frac{N u m b e r o f m i l l i m o l e s o f e l e c t r o l y t e r e q u i r e d}{V o l u m e o f c o l l o i d a l s o l u t i o n (i n l i t r e)}$
$= \frac{10 \times 0.5}{50} \times 1000$
$= 100$

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