Editing Weak base (section)

==Simple Facts==
*An example of a weak base is ammonia. It does not contain hydroxide ions, but it reacts with water to produce ammonium ions and hydroxide ions.<ref>Atkins, Peter, and Loretta Jones. Chemical Principles: The Quest for Insight, 3rd Ed., New York: W.H. Freeman, 2005.</ref>
*The position of equilibrium varies from base to base when a weak base reacts with water. The further to the left it is, the weaker the base.<ref>Clark, Jim. "Strong and Weak Bases."N.p.,2002. Web.</ref>
*When there is a hydrogen ion gradient between two sides of the biological membrane, the concentration of some weak bases are focused on only one side of the membrane.<ref name="ac.els-cdn.com">{{Cite journal |doi = 10.1016/0002-9343(58)90376-0|title = Non-ionic diffusion and the excretion of weak acids and bases|journal = The American Journal of Medicine|volume = 24|issue = 5|pages = 709–729|year = 1958|last1 = Milne|first1 = M.D.|last2 = Scribner|first2 = B.H.|last3 = Crawford|first3 = M.A.}}</ref> Weak bases tend to build up in acidic fluids.<ref name="ac.els-cdn.com"/> Acid gastric contains a higher concentration of weak base than plasma.<ref name="ac.els-cdn.com"/> Acid urine, compared to alkaline urine, excretes weak bases at a faster rate.<ref name="ac.els-cdn.com"/>