A Phosphate Buffer Solution (25

question 125

Multiple Choice

A phosphate buffer solution (25.00 mL sample) used for a growth medium was titrated with 0.1000 M hydrochloric acid. The components of the buffer were sodium monohydrogen phosphate and sodium dihydrogen phosphate. The first endpoint occurred at a volume of 10.32 mL, and the second occurred after an additional 18.62 mL was added, for a total volume of 28.94 mL. What was the total concentration of phosphate (in any form) in the buffer?

• A)0.03992 M
• B)0.1198 M
• C)0.04243 M
• D)0.07448 M
• E)0.08382 M

Understand the procedure and devices required for digitizing physical documents.

Comprehend factors influencing computer purchase decisions.

Know the maintenance practices and troubleshooting steps for common hardware issues.

Understand device driver’s role and automatic device detection mechanisms in computing systems.

---

Definitions:

Socialization

is the process through which individuals learn and adopt the values, norms, and societal rules necessary to function and participate within their culture.

Totems

Objects that symbolize the sacred.

Sacred

The sacred refers to the religious, transcendent world.

Inevitable Death

The unavoidable end of life; a universal phenomenon that all living organisms must eventually face.