The Titration of a Weak Acid, HA ( K _a

question 90

Multiple Choice

The titration of a weak acid, HA ( K _a = 1.0×10 ^{- 4}) , with NaOH requires 40.0 mL to reach the equivalence point. The pH after 20 mL is

• A) Strongly alkaline, approximately 12
• B) Moderately alkaline, approximately 10
• C) Slightly alkaline, approximately 8
• D) Neutral, approximately 7
• E) Moderately acidic, approximately 4

Recognize resources available to individuals with disabilities.

Understand risk factors for declining health in individuals with disabilities, especially women.

Recommend appropriate levels of physical activity for individuals with disabilities to maintain health.

Understand the concept of drug tolerance and its development.

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Definitions:

Melanin Production

The process by which the skin, hair, and eyes gain their color through the synthesis of the pigment melanin.

Cholecalciferol

Also known as Vitamin D3, it is a form of vitamin D that is made by the skin when exposed to sunlight and found in some foods and supplements.

Propionibacterium Acnes

A slow-growing bacterium that is linked to the skin condition acne by contributing to the inflammation of pimples.

Sebum-Rich Areas

Regions of the skin that produce an oily substance called sebum, usually referring to the face, scalp, and upper torso.