For complete coagulation of 200 ml of As2S3 solution,10 ml 1M Nacl is required.What is the coagulating value of NaCl?
(A)200 (B)100 (C)50 (D)25
200 ml of As2S3 solution requires10 ml 1M NaCl
1 l of As2S3 solution requires 50 ml 1M NaCl
50 ml 1M NaCl = 50 mmol NaCl (C)