| hydrogenation |
An addition reaction in which hydrogen, HH, is added. The reverse reaction is called dehydrogenation.
Ãâó: www.geocities.com/Athens/Thebes/5118/obc/402gloss....
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| hydrogen peroxide |
A chemical used in bleaches, dyes, cleansers, antiseptics, and disinfectants. In a concentrated form, it is toxic and irritating to tissues.
Ãâó: www.stjude.org/glossary
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| hydrogen ion |
A positively charged species of chemical, symbol H + , the ionized form of the hydrogen atom. The hydrogen ion is hydrated in aqueous solutions and is usually written as H 3 O + . Neutral water (pH 7) contains hydrogen ions at a concentration of 10 -7 mol L -1 . Dissolution of acids in water leads to an increase in the hydrogen ion concentration, and thus a decrease in the PH.
Ãâó: amsglossary.allenpress.com/glossary/browse
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| hydrogen peroxide |
Strong oxidizing agent, formula H 2 O 2 , that is formed in the atmosphere from the reaction between two hydroperoxyl radicals Hydrogen peroxide is very soluble in water droplets, leading to a high rate of liquid-phase oxidation for soluble sulfur compounds, particularly sulfur dioxide.
Ãâó: amsglossary.allenpress.com/glossary/browse
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| hydrogen sulfide |
Reduced sulfur gas, formula H 2 S, emitted by rotting vegetation; also found in emissions from terrestrial wetlands, marshes, etc. H 2 S is a common reduced sulfur gas in terrestrial systems.
Ãâó: amsglossary.allenpress.com/glossary/browse
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