For Valine (K_a1 = 5

question 29

Multiple Choice

For valine (K_a1 = 5.2 × 10−³ and K_a2 = 1.9 × 10−¹⁰) ,what is the pH at the isoelectric point?

• A) 2.28
• B) 6.00
• C) 7.00
• D) 8.00
• E) 9.72

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