Experiments for 'formic acid'
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 'formic acid':
EXPERIMENT 1
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Without the help of a strong acid, vanadium pentoxide is not capable of
oxidizing formic acid, not even when heated. When some sulfite is added,
then incomplete reduction of the V2O5 can be observed.
With the help of a strong acid and when in solution, vanadium (V) is
capable of oxidizing formic acid, but only very slowly.
With formic acid and vanadium (IV), apparently a coordination complex
is formed. Another explanation is given below at the end of the
description.
EXPERIMENT 2
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Iodide ion and sulphur dioxide form a deep orange/yellow complex at high
concentration. At somewhat lower concentration this complex looks deep yellow.
The complex formed in this experiment is {I.nSO2]-.
EXPERIMENT 3
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Permanganate is capable of oxidizing formic acid quickly, itself being
reduced to manganese (IV). Sulfite is needed to bring the manganese to
the +2 oxidation state.
EXPERIMENT 4
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Potassium dichromate reacts with formic acid, producing a gas (CO2) and
itself being reduced to trivalent chrome.
EXPERIMENT 5
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Potassium bromate does not react with concentrated formic acid, but when
some bromide or hydrochloric acid is added, then the reaction proceeds
quickly, carbon dioxide being produced.
EXPERIMENT 6
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Bromine does not react with formic acid, or it reacts very slowly. When
aluminium is added, then this quickly shows a violent reaction and all of the
aluminium dissolves, leaving a clear orange/red and someawhat viscous liquid.
On dilution with water, a clear yellow liquid is obtained.
EXPERIMENT 7
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Formic acid does not form an acid chloride with thionylchloride, but it
decomposes. Normally, the following reaction occurs:
RCOOH + SOCl2 --> RCOCl + SO2 + HCl
When R = H (formic acid), then decomposition occurs and carbon monoxide is
formed.
EXPERIMENT 8
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Dichromate and chromate both quickly are oxidized by pure formic acid,
resulting in a fairly violent and exothermic reaction, in which a dark
purple/blue/grey compound is formed.
EXPERIMENT 9
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Bromine dissolves fairly well in pure formic acid, but no redox reaction
occurs, not even on heating. When water is added to the mix, then a redox
reaction sets in, in which bubbles of gas are produced (probably CO2).
EXPERIMENT 10
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Formic acid acts as a reductor, while acetic acid does not do so. Formic acid,
however, is not that easily reduced. Reduction requires elevated temperature
and strong oxidizers.
End of results for 'formic acid'