Experiments for 'hydroquinone'
Below follows a summary of all experiments, matching your search. Click one of the EXPERIMENT hyperlinks for a complete description of the experiment.
Results for 'hydroquinone':
EXPERIMENT 1
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Phenol and its derivatives form highly colored coordination complexes
with ferrous and ferric ions.
EXPERIMENT 2
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Hydroquinone is capable of reducing copper (II) to copper (I) in alkaline
environments. The copper is not reduced to its metallic form.
EXPERIMENT 3
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A large set of compounds is checked on interaction with concentrated
nitric acid. Many reductors react violently with nitric acid.
EXPERIMENT 4
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Silver bromide is reduced by metol in alkaline medium.
EXPERIMENT 5
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Hydroquinone is oxidized by ferric chloride to quinone. An intermediate
dark green compound is formed before all hydroquinone is oxidized.
EXPERIMENT 6
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Hydroquinone is oxidized by hydrogen peroxide. This reaction is slow
in a neutral environment.
EXPERIMENT 7
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Ferric chloride enhances the oxidation of hydroquinone by hydrogen
peroxide considerably. Besides this, a coordination complex appears
to be formed when ferric chloride is added to an hydroquinone/peroxide
solution.
EXPERIMENT 8
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Hydroquinone can be oxidized by ferric chloride. If not too much ferric
chloride is added, then a coordination complex of the oxidation product
with hydroquinone is formed and crystals of this compound separate
from the liquid.
EXPERIMENT 9
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Diverse phenol-derivatives, can be oxidized easily by bromine, yielding
intensely colored oxidation products.
EXPERIMENT 10
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Hydroquinone is a very strong reductor in alkaline environments. Oxygen
from the air is readily absorbed by an alkaline solution of hydroquinone.
Sulfite, however, makes an alkaline solution of hydroquinone much more
stable, because of formation of special hydroquinone/sulfite compounds.
EXPERIMENT 11
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Hydroquinone is not oxidized to the dark brown product by hydrogen peroxide
as it is done by oxygen from the air in alkaline environments.
EXPERIMENT 12
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Hydroquinone is readily oxidized by ferricyanide, even in the presence of
sulfite, when in alkaline environments.
EXPERIMENT 13
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Photography developers, based on phenol-like structures, are easily oxidized
by air in alkaline environments and the oxidation products are such, that
a reverse process does not occur anymore (probably the oxidation products
are large polymerized species).
EXPERIMENT 14
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The coordination complexes formed by iron-salts and phenol-like photographic
developers show very typical reactions with hydrogen peroxide. Many times
these reactions result in oxidation products which are not dark colored,
as opposed for oxidation by atmospheric oxygen.
EXPERIMENT 15
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Catechol, resorcinol and hydroquinone all are dihydroxy benzenes. When an
ortho-pair (1,2-pair) or a para-pair (1,4-pair) is present, then the compound
is easily oxidized by air in alkaline environment. When a meta-pair (1,3-pair)
is present, such a reaction does not occur.
EXPERIMENT 16
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When hydroquinone is oxidized by hydrogen peroxide in acidic environments,
then a pale yellow compound is formed. This is in strong contrast with
oxidation by oxygen from air in alkaline environment, where a dark brown/
black compound is formed.
EXPERIMENT 17
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Hydroquinone is oxidized by chlorate, but this reactions proceeds slowly.
When vanadium pentoxide is added in small quantities, then the reaction
proceeds much faster. The vanadium pentoxide acts as a catalyzer.
EXPERIMENT 18
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Vanadium pentoxide catalyzes the oxidation of hydroquinone to quinone by
hydrogen peroxide.
End of results for 'hydroquinone'