why is ferric chloride preferred over potassium chloride in case of a cut leading to bleeding?
Ferric chloride results in faster coagulation of blood around the wound , stopping further bleeding. coagulating power of an electrolyte is proportional to its valenc. since vanlency of Fe+3 is higher compared to K+ as in case of KCl , K+ is only mono-valent ion hence, less effective .
Moreover, FeCl3 does not lead to irritation while KCl may lead to severe irritation round the wound.