The First Disinfectant Used by Joseph Lister Was Called Carbolic

question 41

Multiple Choice

The first disinfectant used by Joseph Lister was called carbolic acid. This substance now is known as phenol, C₆H₅OH (pK_a = 10.0) . What is the pH of a 0.10 M solution of phenol?

• A) 3.5
• B) 10.0
• C) 6.5
• D) 5.5
• E) 4.5