Morphine, C₁₇H₁₉NO₃, Is Often Used to Control Severe Post-Operative Pain

question 63

Multiple Choice

Morphine, C₁₇H₁₉NO₃, is often used to control severe post-operative pain. What is the pH of the solution made by dissolving 25.0 mg of morphine in 100. mL of water? (For morphine, K_b = 1.62 * 10^-6.)

• A) 9.57
• B) 9.08
• C) 3.79
• D) 9.87
• E) 4.43

---

Definitions:

Cones

Photoreceptor cells in the retina of the eye responsible for color vision and function best in bright light.

Rods

Photoreceptor cells in the retina of the eye that are highly sensitive to light and enable vision in low-light conditions.

Sweet Tastes

The gustatory perception characterized by the presence of sugar or substances with a similar flavor profile.

Sour Tastes

One of the basic tastes, characterized by the sensation of acidity and tanginess, often triggered by hydrogen ions in substances.