floridianfis Posted September 18, 2007 Share 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? Link to comment Share on other sites More sharing options...
John Cuthber Posted September 18, 2007 Share 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. Link to comment Share on other sites More sharing options...
ajman2463 Posted October 23, 2007 Share 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. Link to comment Share on other sites More sharing options...
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