Experiments for 'ammonium molybdate'
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 'ammonium molybdate':
EXPERIMENT 1
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When molybdates are reduced, then intense blue compounds are formed. It
is believed that these intensely coloured compounds are multi-nuclear
Mo-compounds, with different nuclei having different oxidation states.
EXPERIMENT 2
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In strongly alkaline environments, molybdates are not as easily reduced
as in neutral or acidic environments.
EXPERIMENT 3
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Molybdates and phosphates produce a yellow complex in an anion, containing
both molybdenum and phosphorus. This complex is slowly reduced by sulfite.
EXPERIMENT 4
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Molybdate gives rise to all kinds of complexes, when combined with reducing
agents. These complexes can be yellow, green or blue. The composition of
all these complexes is not very clear.
EXPERIMENT 5
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Molybdate gives a yellow complex with iodide. Order of dissolving and
acidifying has influence on the reactions observed.
EXPERIMENT 6
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Molybdate forms blue or green compounds, when reduced with mild reducing
agents or when little quantitities of reducing agents are used.
EXPERIMENT 7
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Ammonium molybdate forms a yellow coordination complex with phosphates in
acidic environments, which precipitates. Oxidizing compounds do not
dissolve this precipitate, alkaline compounds do dissolve this precipitate.
EXPERIMENT 8
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Molybdates and orthophosphates give a yellow complex, which is reduced more
easily than molybdates alone.
EXPERIMENT 9
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Phosphates and molybdates are supposed to form a yellow complex. Other
experiments confirm this reaction, but this experiment does not show
such behavior. May be longer heating is required or an excess amount of
a strong acid is required?
End of results for 'ammonium molybdate'