Question

pH value of the

(1) Saliva (before meal)

(2) Saliva (after meal)

Answer 1

pH:

• pH is the measure of the acidic or basic nature of a substance.
• range of pH is $0-14$, where $7$ is neutral, less than $7$ is acidic, and more than $7$ is basic.
• The pH of saliva before the meal is about $7.4$ which is basic.
• The pH of saliva after the meal is around $5.8$ which is acidic.