Homework 5 Chapter 10 (page 248) Problems 31,32,36 The following problems a. What is the minimum pH required for the complete solubility of the drug in a stock solution containing 6 gm of phenobarbital sodium in 100 ml of water. The pKa of Phenobarbi
And the following problems. 1. What is the mole percent of free phenobarbital (pKa=7.41, weak acid) in solution at pH 8.00. 2. What is the mole percent of free cocaine (pKb=5.59, weak base) in solution at pH 8.00.