please help me with this question and Explain how you did it

3) The molecule below is procaine, an anesthetic marketed under the trade name Novocain". a) The pKa values for the fully protonated amines are 2.9 and 9.0. Use your reasoning to assign the pKa to the correct nitrogen in the boxes provided. (2 points) b) In the boxes below draw the protonated states of procaine you would expect at pH2 and pH 7.2. (4 points) pH7.2