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2 answers

Go to wikipedia and look at whats at its ends. You have an OH- at one end (very basic) and N-H bonds athe other (since nitrogen can take another H+, it is basic). So the pKa values for a basic solution would be a relatively large number

2006-12-21 10:41:06 · answer #1 · answered by Stu 2 · 0 0

Right... Stu says that there's an OH at one end and NH2 at the other...actually there's a COOH group at one end and an NH2 group at the other...but off course that is true of ALL amino acids.
What you need to do is look at the ionizable side chains in the structure, and for Arg these are of the NH or NH2 type...which means that the pKa value will be that for a very BASIC solution...round about 12 - 13.

2006-12-22 09:48:18 · answer #2 · answered by drjaycat 5 · 0 0

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