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