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Why does potassium permanganate and sodium bisulfite form a brown precipitate?
Wiki User
∙ 12y ago
The brown precipitate is MnO2, it is the product of the following redox in neutral environment:
For each half reaction:
MnO4- + 4H++ 3e- → MnO2 + 2H2O REDUCTION
HSO3- + H2O → SO42- + 3H+ + 2e- OXIDATION
Overall: Permanaganate half reaction x2 + Bisulfite half reactionx3
2MnO4- + 3HSO3- + 8H+ + 3H2O + 6e- → 2MnO2 + 3SO42- + 4H2O + 9H+ + 6e-
Cancelling like terms:
2MnO4- + 3HSO3- → 2MnO2 + 3SO42- + H3O+
Note that all species are balanced, all charges are balanced and the brown precipitate MnO2 is accounted for. The reaction also predicts that acid is formed in the process.
Wiki User
∙ 12y ago
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Acidified solution potassium permanganate added solution sodium sulfite?
Potassium permanganate and sulfite:2MnO4-(aq) + 5SO32-(aq) + 6H+(aq) --> 5SO42- + 2Mn2+(aq) + 3H2O(l)Note:Potassium and sodium ions do NOT react, they are tribune-ions
What is the name of NaMnO4 compound?
sodium permanganate
What colour is the precipitate formed when sodium hydroxide reacts with potassium iodide?
They are not soluble, therefore they do not precipitate or form a color....a.k.a....no reaction...
Sodium bisulfite freezing point?
Melting point of Sodium bisulfite NaHSO3 150 °C, 423 K, 302 °F
What is the specific heat of sodium bisulfite?
1.928
What is the balanced eq when potassium permanganate is added to sodium bisulfite?
Potassium permanganate and bisulfite in stronger acid environment:2MnO4-(aq) + 5HSO3-(aq) + H+(aq) --> 5SO42- + 2Mn2+(aq) + 3H2O(l)Note:Potassium and sodium ions do NOT react, they are tribune-ions.
What is alkaline pottassium permanganate solution?
Alkaline potassium permanganate solution is a solution of potassium permanganate containing an alkali. The alkali can be sodium hydroxide or potassium hydroxide.
What is name of KMnO4?
KMnO4 is potassium permanganate.
What is the common name for potassium permanganate?
Yes. Sodium permanganate is an ionic compound comprising mono-atomic sodium cations and polyatomic permanganate anions.
What reaction is there if any between Potassium permanganate and sodium hydroxide solution?
nope
What are the salts used commonly?
Examples: sodium chloride, potassium chloride, calcium chloride, sodium hydrogen carbonate, sodium citrate, potassium permanganate, magnesium sulfate etc.
What are the most common salt?
Examples: sodium chloride, potassium chloride, calcium chloride, sodium hydrogen carbonate, sodium citrate, potassium permanganate, magnesium sulfate etc.
Acidified solution potassium permanganate added solution sodium sulfite?
Potassium permanganate and sulfite:2MnO4-(aq) + 5SO32-(aq) + 6H+(aq) --> 5SO42- + 2Mn2+(aq) + 3H2O(l)Note:Potassium and sodium ions do NOT react, they are tribune-ions
What is storm gold precipitant made from?
Sodium hydrogen sulphite: Sodium bisulfite, not sodium "meta" bisulfite
What is the name of NaMnO4 compound?
sodium permanganate
What is the molecular equation of Potassium permanganate react with sodium nitrite?
KMnO4 + NaNO2 -> KNO2 + NaMnO4
How do you remove potassium permanganate stains?
"Hard scrubbing with water or scrubbing with Sodium Bisulfite solution." Good answer! It worked like a charm. I used saturated sodium bisulfite, aqueous. I've gotten the habit of first trying Nochromix in concentrated sulfuric acid for cleaning laboratory glassware. This doesn't work at all for glass bottles which have contained an aqueous solution of 1% potassium permanganate for many years. So I doubt that the other answer here, namely, to use lemon juice, would work at all since this is a much weaker acid than sulfuric. Caution: If you don't rinse out the sulfuric acid before trying sodium bisulfite, you must do this in a fume hood or a well-ventilated area since SO2 gas (or some other nasty respiratory irritant) evolves.
