Question

For the coagulation of 200ml of as2s3 solution, 10ml of 1m nacl is required. What is the coagulation value of nacl

Answer 1

Answer: The coagulation value of NaCl is 50 .

Solution:

Coagulation value is the number of milli moles of electrolyte required to bring out the complete coagulation of one liter of colloidal solution.

Number of moles of NaCl in 10 mL of 1 M

1 L solution contains 1 mol of NaCl

Then 10 mL solution will contain = $\frac{1}{1000}\times 10=0.01 mol=10$ milli moles     (1 mol = 1000 milli mol)

If 10 milli moles of 0.1 M NaCl coagulates 200 mL of $As_2S_3$

Then for 1000 mL =$\frac{10}{200}\times 1000=50$ milli moles  (1L=1000ml)

50 is the coagulation value of NaCl.

Answer 2

Answer:

4 will be ur answer....