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

See Examples For:

permanganic acid

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

Manganese forms no less than six different oxides—viz., protoxide, sesquioxide the red oxide, the binoxide or peroxide, manganic acid, and permanganic acid.

From Scientific American Supplement, No. 401, September 8, 1883 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 William McPherson

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

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