Which of the Following Statements Is True

question 29

Multiple Choice

Which of the following statements is true?

• A) At two pH units above the pKa, the carboxylate ion concentration exceeds the concentration of the carboxylic acid by a 100 to 1 ratio.
• B) At two pH units above the pKa, the carboxylate ion concentration exceeds the concentration of the carboxylic acid by a 2 to 1 ratio.
• C) At two pH units below the pKa, the carboxylate ion concentration exceeds the concentration of the carboxylic acid by a 2 to 1 ratio.
• D) At two pH units below the pKa, the carboxylate ion concentration exceeds the concentration of the carboxylic acid by a 10 to 1 ratio.
• E) At two pH units below the pKa the carboxylate ion concentration is equal to the carboxylic acid concentration.

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Definitions:

Atherosclerosis

A disease characterized by the buildup of plaque inside arteries, leading to reduced or blocked blood flow.

Arteriosclerosis

A condition characterized by the thickening, hardening, and loss of elasticity of the walls of arteries, leading to restricted blood flow.

Angina Pectoris

A disorder involving a restricted blood supply to the myocardium, which results in chest pain and restricted breathing.

Diastolic Pressure

The lower number in a blood pressure reading, representing the pressure in the arteries when the heart is resting between beats.