In chemistry, chromic acid is a chromium
compound, yet to be isolated, that would have the formula H2CrO4.
There is a related acid, also
yet to be isolated called dichromic acid with the formula H2Cr2O7.
While these acids are
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not available, they are known through their divalent anions (chromate
and dichromate respectively) and the compounds formed from
them. Please note that the acid anhydride
of chromic acid exists, chromium trioxide ( CrO3), and that industrially,
this compound is sometimes sold as "chromic acid".
Chromic acid solutions are generally acidified aqueous solutions of chromate or dichromate salts. These solutions tend to be powerful oxidants, capable of destroying all organics in glassware and so often used for the cleaning of glass.
