What Is the PH of a Solution Prepared by Dissolving

question 52

Multiple Choice

What is the pH of a solution prepared by dissolving 4.50 g sodium dihydrogen borate (83.82g/mol) in 650 mL of a 0.0725 M boric acid? The K_a of boric acid is 5.4 *10^-10.Ignore any volume change.

• A)9.21
• B)9.32
• C)9.27
• D)9.40
• E)9.14

---

Definitions:

Psychological Topics

encompass a wide range of subjects related to human behavior, mental processes, and emotional experiences.

Approach

A method or way of dealing with a problem or task, or the act of moving towards something.

Cognitive Approach

A psychological perspective that focuses on how people perceive, think about, and understand their worlds, emphasizing mental processes like memory, perception, and problem-solving.