Question

For the coagulation of 20ml of gold Sol, 20ml of 0.05 NaCl is required. The flocculation value of NaCl is

Answer 1

Answer:

Flocculation value is the number of milli moles needed of an electrolyte to coagulate 1000ml of gold sol. I suppose 0.05 is the molarity of the solution which simply means that for 20 ml of gold sol , mmol of NaCl required is 1 milli mole. Hence for 1000 ml, 50 milli moles of NaCl would be needed .

Therefore the answer is 50. Hope it helps !