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

Manganese forms two unstable acids, namely, manganic acid and permanganic acid.

From An Elementary Study of Chemistry by McPherson, William

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

It is obtained by treating a solution of permanganate of baryta with sulphuric acid, when sulphate of baryta falls, and the permanganic acid remains dissolved in the water.

From Scientific American Supplement, No. 401, September 8, 1883 by Various

In both cases the characteristic coloration from permanganic acid is developed by the action of the current at the positive pole; this, however, disappears in the direction of the negative electrode.

From Scientific American Supplement, No. 299, September 24, 1881 by Various