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:

Reproductive Organ

An organ involved in the process of producing offspring, including structures like ovaries and testes in animals.

Transcription Rate

The transcription rate refers to the speed at which genetic information is copied from DNA to RNA, affecting gene expression levels.

Enhancer

A short region of DNA that can be bound with proteins (transcription factors) to increase the likelihood that transcription of a particular gene will occur.

Lac Operon

A gene system found in E. coli and other bacteria that regulates the metabolism of lactose, demonstrating gene regulation principles.