permanganic acid

American  

noun

Chemistry.

1. an acid, HMnO 4 , known only in solution.

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permanganic acid British  

/ ˌpɜːmænˈɡænɪk /

noun

1. Systematic name: manganic(VII) acid.  a monobasic acid known only in solution and in the form of permanganate salts. Formula: HMnO 4

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permanganic acid Scientific  

/ pûr′măn-găn′ĭk /

1. An unstable inorganic acid existing only in dilute solution. Its purple aqueous solution is used as an oxidizing agent. Chemical formula: HMnO ₄ .

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Etymology

Origin of permanganic acid

First recorded in 1830–40

Example Sentences

In very dilute strongly acid nitric solutions there is formed only permanganic acid, which according to Riche is plainly visible in solutions containing 1/1000000 grm. manganese.

From Scientific American Supplement, No. 441, June 14, 1884. by Various

On electrolyzing a manganiferous solution of copper nitrate, red permanganic acid appeared in a stratum floating above the platinum disk coated with brown peroxide.

From Scientific American Supplement, No. 441, June 14, 1884. by Various

Organic acids, ferrous oxide, chromic oxide, ammonium salts, etc., prevent the formation of peroxide and the red color produced by permanganic acid.

From Scientific American Supplement, No. 441, June 14, 1884. by Various

If this second bath of binoxide of barium does not produce the requisite whiteness, it is introduced into a solution of permanganic acid or permanganate of magnesia before the last washing.

From Scientific American, Vol. XXXVII.?No. 2. [New Series.], July 14, 1877 A Weekly Journal Of Practical Information, Art, Science, Mechanics, Chemistry, And Manufactures by Various

When carbon dioxide is passed through a solution of a manganate a part of the manganese is changed into manganese dioxide, while the remainder forms a salt of the unstable acid HMnO4, called permanganic acid.

From An Elementary Study of Chemistry by McPherson, William