If the PH of a Solution Is Decreased from 9

question 50

Multiple Choice

If the pH of a solution is decreased from 9 to 8, it means that the

• A) concentration of H⁺ has decreased to one-tenth (1/10) what it was at pH 9.
• B) concentration of H⁺ has increased tenfold (10X) compared to what it was at pH 9.
• C) concentration of OH⁻ has increased tenfold (10X) compared to what it was at pH 9.
• D) concentration of OH⁻ has decreased to one-tenth (1/10) what it was at pH 9.
• E) concentration of H⁺ has increased tenfold (10X) and the concentration of OH⁻ has decreased to one-tenth (1/10) what they were at pH 9.

---

Definitions:

Salivary Gland

Exocrine glands located in the mouth that produce saliva, aiding in digestion and oral hygiene.

Canine

A tooth located between the incisors and premolars, pointed in shape and used for tearing food.

Premolar

A type of tooth located between the canine teeth and molars in the mouth, used for crushing and grinding food.

Incisor

A front tooth specialized in cutting food, found in both the upper and lower jaws of mammals.