Hydrogen combines with oxygen to form two definite compounds, namely, water (q.v.), H 2 O, and hydrogen peroxide, H202, whilst the existence of a third oxide, ozonic acid, has been indicated.
Ozonic Acid, H204.
Villiger (Ber., 1902, 35, p. 3038) think is derived from ozonic acid, produced according to the reaction 0 3 +H 2 0 = H204.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.