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Q.

PKa of –COOH group in tryptophan is 2.4 when tryptophane is placed in solution of pH 5.9, doesn’t migrate towards any pole during electrolysis. Then what us the Pka of NH3 group in tryptophane

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a

2.4

b

3.5

c

9.4

d

5.9

answer is C.

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Detailed Solution

pI=pH=pKa1+pKa22

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