Which of the Following Acids Has the Lowest PH

question 18

Multiple Choice

Which of the following acids has the lowest pH?

• A) 0.1 M HBO, pK_a = 2.43
• B) 0.1 M HA, pK_a = 4.55
• C) 0.1 M HMO, pK_a = 8.23
• D) 0.1 M HST, pK_a = 11.89
• E) pure water

---

Definitions:

Allergic Dermatitis

Inflammatory skin condition triggered by an allergic reaction to substances or allergens.

Dyes

Substances used to add color to materials, from textiles to biological tissue samples for microscopic examination.

Ingrown Nail

A condition where the nail grows into the flesh instead of over it, often causing pain, redness, and swelling.

Besnier's Prurigo

Also known as Atopic Dermatitis, a chronic skin condition marked by itchy and inflamed skin.