🧪ap chemistry review

HCN

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

HCN is the chemical formula for hydrogen cyanide, which is a weak acid. In solution, it partially dissociates to produce hydrogen ions (H⁺) and cyanide ions (CN⁻).

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