Question

Question 4 4 pts Choose the correct answers from the dropdown menus: As you gradually add KOH (a strong base) to glycine (a weak acid) during the titration, the following happens: as the pH in the beaker increases . the proton concentration decreases ; therefore, the alpha- carboxy group goes from neutral to charged, while the alpha- amino goes from charged to neutral.
Am I right?

Answer 1

You are completely right.

When a strong base (KOH) is added to a weak acid (glycine) the ph of the solution will increase (since the Base is strong and acid is weak) and the solution becomes basic. Proton conc. Of the solution decreses and hydroxide ion conc. Increases. Therefore the alpha carboxy group of the acid becomes charged and alpha amino group becomes neutral.