The PK_a of HEPES Is 7

question 74

Multiple Choice

The pK_a of HEPES is 7.55. What is the pH of a buffer prepared by mixing 200.0 mL of 0.20 M HEPES in its acid form with 100.0 mL of 0.20 M HEPES in its basic form?

• A) 6.55
• B) 7.25
• C) 7.85
• D) 8.55

---

Definitions:

Sleep Patterns

The assortment of sleep behaviors and cycles, including the timing, duration, and quality of sleep, which can influence health and well-being.

Productive

The efficiency and effectiveness in generating or producing goods, outcomes, or results from a given set of resources or efforts.

Benzodiazepine Sedative

A class of psychoactive drugs known to have calming effects, which are used to treat conditions like anxiety, insomnia, and seizures.

Psychoactive Drug

A substance that chemically alters brain activity, leading to changes in how we perceive things, feel, remain conscious, think, or act.