perrhenic acid

noun

per·​rhenic acid

¦pər,

pə,

(ˈ)per+…- -

: either of two acids formed by the oxidation of rhenium or rhenium compounds of lower valence states and known only in solution or in the form of salts:

a

: the monobasic acid HReO₄ analogous to permanganic acid that forms colorless stable salts

called also metaperrhenic acid

b

: the tribasic acid H₃ReO₅ that forms yellow salts turning red when heated and hydrolyzed in water to salts of metaperrhenic acid

called also mesoperrhenic acid

Word History

Etymology

per- + New Latin rhenium + English -ic

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