floridianfis Posted September 18, 2007 Posted September 18, 2007 I am having trouble finding out how to get 10.22 ofr the answere to the following question. Can anyone help? A solution of Valine is obsevered to have its amino group partially deprotonated. 25 % is of the form R-NH3+, and 75% is of the form R-NH2. Assume that Valine has the following pKa values: 2.29 and 9.74. What is the pH of this solution?
John Cuthber Posted September 18, 2007 Posted September 18, 2007 This may help http://en.wikipedia.org/wiki/Henderson-Hasselbalch_equation So might the fact that one of the pKa s isn't important here.
ajman2463 Posted October 23, 2007 Posted October 23, 2007 remember, in a certain area whe pka > pH, you will have the NH3+ where pka < pH, you will only have the two nitrogens.
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