HCN is classified as a weak acid in water. This classification means that a relatively small fraction of the acid undergoes ionization.

Name: HCN is classified as a weak acid in water. This classification means that a relatively small fraction of the acid undergoes ionization.
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A weak acid is one that only partially dissociates in water, meaning a relatively small fraction of the acid molecules actually break apart into ions. HCN (hydrogen cyanide) is a weak acid.

HCN Is Classified as a Weak Acid in Water