For HF,pK_a = 3

question 8

Multiple Choice

For HF,pK_a = 3.45.What is the pH of an aqueous buffer solution that is 0.100 M HF(aq) and 0.300 M KF(aq) ?

• A)10.07
• B)2.97
• C)3.45
• D)3.93
• E)11.03

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Definitions:

Hydrostatic Skeleton

A structure found in many soft-bodied organisms that uses water pressure inside the body to maintain shape and facilitate movement.

Endoskeleton

An internal support structure of the body, found in vertebrates, providing framework and protection for the body's organs.

Exoskeleton

A hard outer shell that covers the body of certain invertebrate creatures, particularly those in the arthropod group, offering support and defense.

Integumentary System

The Integumentary System is the body system that includes the skin and its appendages, serving as a protective barrier against environmental hazards.