This document summarizes key chapters from the textbook "Biochemistry 2/e" by Garrett and Grisham. The chapters discussed include properties of water such as its polarity and ability to form hydrogen bonds, pH and acid-base equilibria including definitions of pH and pKa, and buffers. Specific examples are provided of calculating pH using the Henderson-Hasselbalch equation for different amounts of base added to a solution of acetic acid.