Experiments for 'manganese (II) sulfate'
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 'manganese (II) sulfate':
EXPERIMENT 1
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Manganese (II) forms a white precipitate with bicarbonate, while slowly
developing a gas (probably this is CO2). This precipitate is not quickly
oxidized by oxygen from the air. When the precipitate is made more alkaline
by adding hydroxide, then it is oxidized fairly quickly. Addition of
hydrogen peroxide causes immediate oxidation of the alkaline precipitate.
EXPERIMENT 2
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Manganese (II) is not reduced to the metal, it forms a white precipitate
with borohydride, which remains white for a long time. This precipitate
does not turn brown, as manganese (II) precipitates normally do in
alkaline environments.
EXPERIMENT 3
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In concentrated phosphoric acid, manganese (II) ions are oxidized easily to
manganese (III) ions, which are stabilized by formation of a phosphato-complex
with a remarkably bright purple color. This reaction is remarkable in the sense
that oxidation stops at manganese (III).
EXPERIMENT 4
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Periodate is capable of oxidizing manganese (II) to permanganate completely
in a short period of time. This is one of the rare examples of an oxidizer,
which is capable to oxidize manganese all up to the +7 oxidation state in
aqueous environments.
EXPERIMENT 5
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When copper ions are brought in contact with periodate, then a yellow/green
precipitate is formed. This precipitate very easily dissolves in hydrochloric
acid, giving chlorine gas and other products.
When the same is done with manganese(II) ions instead of copper ions, then a
brick-red precipitate is formed, which does not easily dissolve in hydrochloric
acid.
EXPERIMENT 6
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When a solution of manganese(II)chloride in moderately concentrated
hydrochloric acid is electrolysed, then at the anode a remarkable very dark
compound is formed. The liquid remains clear, but it becomes very dark. This
must be a compound of manganese in higher than +2 oxidation state.
When a similar experiment is performed with manganese(II)sulfate in a 20%
solution of sulphuric acid, then a drk brown precipitate is formed at the
anode.
EXPERIMENT 7
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Manganese (II) ions and periodate react with each other, even at room
temperature to form a peculiar brown precipitate with a pink/orange hue.
Certainly not the common dark brown manganese (IV) oxide/hydroxide is formed,
but a much lighter colored precipitate.
EXPERIMENT 8
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Many iodates are insoluble, but manganese(II) ions do not give a precipitate
with iodate ion, nor is there any redox reaction between these ions.
Periodate on the other hand gives a nice brickred precipitate with
manganese(II).
End of results for 'manganese (II) sulfate'