A Solution of an Unknown Acid Had a PH of 3.70

question 69

Multiple Choice

A solution of an unknown acid had a pH of 3.70. Titration of a 25.0 mL aliquot of the acid solution required 21.7 mL of 0.104 M sodium hydroxide for complete reaction. Assuming that the acid is monoprotic, what is its ionization constant?

• A) 9.0 × 10^-2
• B) 2.0 × 10^-4
• C) 4.4 × 10^-7
• D) 3.6 × 10^-9
• E) 2.7 × 10^-11

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Definitions:

Peripheral Nervous System

The portion of the nervous system that lies outside the brain and spinal cord, responsible for connecting the CNS to limbs and organs.

Motor Neurons

Nerve cells that originate in the brain or spinal cord and project their axons to muscle fibers, facilitating voluntary and involuntary movements.

Reticular Formation

A nerve network in the brainstem that plays an important role in controlling arousal.

Genital Sensations

Feelings or perceptions experienced in the genital area, often associated with sexual activity or arousal.