Which of the Following Solutions Will Be the Best Buffer

question 146

Multiple Choice

Which of the following solutions will be the best buffer at a pH of 9.26? (K_a for HC₂H₃O₂ is 1.8  10^-5; K_b for NH₃ is 1.8  10^-5.)

• A) 0.20 M NH₃ and 0.20 M NH₄Cl
• B) 3.0 M HC₂H₃O₂ and 3.0 M NH₄Cl
• C) 0.20 M HC₂H₃O₂ and 0.20 M NaC₂H₃O₂
• D) 3.0 M NH₃ and 3.0 M NH₄Cl
• E) 3.0 M HC₂H₃O₂ and 3.0 M NH₃

---

Definitions:

Whistle-Blower

A person who informs on a person or organization regarded as engaging in an unlawful or immoral activity.

Goes Public

The process by which a private company offers its shares to the public for the first time through an initial public offering (IPO).

Improper Actions

involve behaviors or activities that are unethical, illegal, or not in accordance with established standards or policies.

Social Responsibility

The obligation of individuals, organizations, and businesses to contribute to the welfare of society and operate in an ethically, environmentally, and socially aware manner.