Hydrogen dioxide
Hydrogen Hy"dro*gen, n. [Hydro-, 1 + -gen: cf. F. hydrog[`e]ne. So called because water is generated by its combustion. See {Hydra}.] (Chem.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air (hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those of animal or vegetable origin. It may by produced in many ways, but is chiefly obtained by the action of acids (as sulphuric) on metals, as zinc, iron, etc. It is very inflammable, and is an ingredient of coal gas and water gas. It is standard of chemical equivalents or combining weights, and also of valence, being the typical monad. Symbol H. Atomic weight 1. [1913 Webster]

Note: Although a gas, hydrogen is chemically similar to the metals in its nature, having the properties of a weak base. It is, in all acids, the base which is replaced by metals and basic radicals to form salts. Like all other gases, it is condensed by great cold and pressure to a liquid which freezes and solidifies by its own evaporation. It is absorbed in large quantities by certain metals (esp. palladium), forming alloy-like compounds; hence, in view of quasi-metallic nature, it is sometimes called {hydrogenium}. It is the typical reducing agent, as opposed to oxidizers, as oxygen, chlorine, etc. [1913 Webster]

{Bicarbureted hydrogen}, an old name for ethylene.

{Carbureted hydrogen gas}. See under {Carbureted}.

{Hydrogen dioxide}, a thick, colorless liquid, {H2O2}, resembling water, but having a bitter, sour taste, produced by the action of acids on barium peroxide. It decomposes into water and oxygen, and is manufactured in large quantities for an oxidizing and bleaching agent. Called also {oxygenated water}.

{Hydrogen oxide}, a chemical name for water, H?O.

{Hydrogen sulphide}, a colorless inflammable gas, {H2S}, having the characteristic odor of bad eggs, and found in many mineral springs. It is produced by the action of acids on metallic sulphides, and is an important chemical reagent. Called also {sulphureted hydrogen}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • hydrogen dioxide — noun : hydrogen peroxide * * * hydrogen dioxide, = hydrogen peroxide. (Cf. ↑hydrogen peroxide) …   Useful english dictionary

  • hydrogen dioxide — noun hydrogen peroxide …   Wiktionary

  • Hydrogen — Hy dro*gen, n. [Hydro , 1 + gen: cf. F. hydrog[ e]ne. So called because water is generated by its combustion. See {Hydra}.] (Chem.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half… …   The Collaborative International Dictionary of English

  • Hydrogen oxide — Hydrogen Hy dro*gen, n. [Hydro , 1 + gen: cf. F. hydrog[ e]ne. So called because water is generated by its combustion. See {Hydra}.] (Chem.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a …   The Collaborative International Dictionary of English

  • Hydrogen sulphide — Hydrogen Hy dro*gen, n. [Hydro , 1 + gen: cf. F. hydrog[ e]ne. So called because water is generated by its combustion. See {Hydra}.] (Chem.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a …   The Collaborative International Dictionary of English

  • Hydrogen peroxide — IUPAC name …   Wikipedia

  • Hydrogen sulfide — Systematic name …   Wikipedia

  • Hydrogen production — Hydrogen is commonly produced by extraction from hydrocarbon fossil fuels via a chemical path. Hydrogen may also be extracted from water via biological production in an algae bioreactor, or using electricity (by electrolysis), chemicals (by… …   Wikipedia

  • Hydrogen cycle — Hydrogen is one of the constituents of water. It recycles as in other biogeochemical cycles. It is actively involved with the other cycles like the carbon cycle, nitrogen cycle ,sulfur cycle and oxygen cycle as well.Anaerobic fermentation of… …   Wikipedia

  • Hydrogen economy — The hydrogen economy is a proposed system of delivering energy using hydrogen. The term hydrogen economy was coined by John Bockris during a talk he gave in 1970 at General Motors (GM) Technical Center.[1] Hydrogen advocates promote hydrogen as… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”