Many drugs that arenatural Bronsted bases are put into aqueous solution as their much more soluble salts with strong acids. The powerful painkiller morphine, for example, is very slightly soluble in water, but morphine nitrate is quite soluble in water, but morphine nitrate is quite soluble. We may represent morphine by the symbol Mor and its conjugate acid is H-Mor^+. The pKb of morphine is 6.13. What is the calculated pH of a 0.20 M solution of H-Mor^(+)?