Which of the Following Is the Weakest Acid

question 181

Multiple Choice

Which of the following is the weakest acid?

• A) HCN (pK_a = 9.31)
• B) HIO₃ (pK_a = 0.77)
• C) HF (pK_a = 3.45)
• D) CH₃COOH (pK_a = 4.75)
• E) HNO₂ (pK_a = 3.37)

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Definitions:

Primacy Effects

A psychological phenomenon where earlier information presented in a sequence is remembered better than information presented later.

Retrieval Cue

Stimuli or prompts that facilitate the recall of information stored in memory.

Chunk

A cognitive unit of information organized or grouped together, often used as a strategy to improve memory retention.

Nonsense Syllable

A string of letters that does not follow the rules of grammar or language and has no meaning, often used in memory and learning experiments.