TLS Online TPP Program

#Question id: 181


Titration of valine by a strong base, for example NaOH, reveals two pK’s. The titration reaction occurring at pK2 (pK2 = 9.62) is:

#Section 2: General Biology
  1. —COOH + OH-  -> —COO- + H2O.

  2. —COOH + —NH2 -> —COO- + —NH2+.

  3.  —COO- + —NH2+ -> —COOH + —NH2.

  4. —NH3+ + OH-  -> —NH2 + H2O.