As the concentration of hydrogen ions (H+) increases, a solution becomes more acidic, and the pH value decreases. As the concentration of hydrogen ion acceptors (such as hydroxyl or bicarbonate ions) increases, a solution becomes more basic, and the pH value increases. Note the pH of some common substances.
a Hydrogen Ion Concentrations and pH
Neutral—neither acidic nor basic
Grams of H+ per Liter
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.