3- The undissociated form of pentachlorophenol (C6C15-OH) is absorbed through the intestinal lining. Assume that, because of its negative charge, the rate of pentachlorophenate (C6C13-0) absorption is negligible. The pKa of pentachlorophenol is 4.75. (i) If the stomach pH is 2.75 and the small intestine pH is 6.75, where is the absorption of the pentachlorophenol the greatest? (ii) What is the fraction of undissociated pentachlorophenol for each case? OH +H CI CI