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What is a
Hydrogen Reaction? Definition of a Reaction
Define a Hydrogen
Reaction: A Hydrogen Reaction involves a process in
which Hydrogen is mixed with another substance which
react to form something else. Reactions are manifested
by the disappearance of properties characteristic of
Hydrogen and the appearance of new properties in the new
substance or Compound.
The substances initially involved in a reaction are
called reactants or reagents. Hydrogen combines with
other elements to form numerous compounds including
water (H2O), ammonia (NH3), hydrochloric acid (HCl) and
hydrogen peroxide (H2O2). Water (H2O) is
widely used in chemical reactions as a solvent or
reactant and less commonly as a solute or catalyst. Reactions are described
with Chemical
Formula and Equations.
Hydrogen and
Oxygen Reaction - Hydrogen H2O
Hydrogen and Oxygen react together to form water (H2O).
Water is a liquid at ambient conditions, but it often co-exists
on Earth with its solid state, ice, and gaseous state, water
vapor or steam. Both hydrogen and oxygen react with themselves
to form the molecules H2 and O2
respectively. It takes two molecules of the diatomic hydrogen
gas, combined with one molecule of the diatomic oxygen gas to
produce two molecules of water. Water is a liquid at standard
temperature and pressure. It is tasteless and odorless. Pure
water has poor electrical conductivity, but this increases
significantly with the dissolution of a small amount of ionic
material such as sodium chloride. As an oxide of hydrogen, water
is formed when hydrogen or its compounds burn or react with
oxygen or its compounds. Water is a good solvent. Substances
that dissolve in water are salts, sugars, acids, alkalis and
some gases (oxygen, carbon dioxide) are called hydrophilic
(water-loving) substances. Substances that do not mix well with
water are fats and oils are called hydrophobic (water-fearing)
substances. Water can be converted into Hydrogen and Oxygen
through the process of Electrolysis.
Hydrogen Peroxide Reaction
Hydrogen peroxide (H2O2) is a clear,
liquid, oxidizer commonly used as a bleach. Hydrogen peroxide
decomposes (disproportionates) exothermically into water and
oxygen gas spontaneously:
2 H2O2
→ 2 H2O + O2
Distillation of
hydrogen peroxide at normal pressures is highly dangerous
because hydrogen peroxide can give off vapor that can detonate
above 158 °F (50 °C) at normal atmospheric pressure. Low
concentrations of hydrogen peroxide will chemically bleach many
types of clothing it comes into contact with.
Hydrogen Sulfide Reaction
Hydrogen sulfide (H2S) is a colorless, very
poisonous, flammable gas with the foul stench of rotten eggs. It
acts as a reducing agent and is explosive. Hydrogen sulfide and
oxygen burn with a blue flame to form sulfur dioxide (SO2)
and water. Hydrogen sulfide (H2S) is slightly soluble
in water and acts as a weak acid, it reacts with metal ions to
form metal sulfides. Lead(II) acetate paper is used to detect
hydrogen sulfide (H2S) because it turns grey in the
presence of the gas as lead(II) sulfide is produced.
Hydrogen and
Nitrogen Reaction
When Hydrogen is mixed with Nitrogen either ammonia (NH3)
or ammonium (NH4) is formed. Ammonia is a colourless
pungent gas which is lighter than air and very soluble in water
which is used mainly to produce nitrogenous fertilizers, nitric
acid, and some explosives. Ammonium compounds can occur in the
vapor phase. When ammonia vapor comes in contact with hydrogen
chloride vapor, a white cloud of ammonium chloride forms, which
eventually settles out as a solid in a thin white layer on
surfaces.
Chemical Reactions
Some examples of a chemical reaction include most commonly burning, fermentation,
tarnishing and rusting. There are several different types of Chemical reaction
which have been detailed below:
-
Substitution reactions
-
Double
displacement reactions
-
Acid-base
reactions
-
Combustion reactions
-
Combination reactions
-
Decomposition reactions
Refer to
our
Chemical Reaction
article for additional facts and information providing
the different types of reactions, examples of reaction
and the Rate of a Chemical Reaction. |
