Reaction equation of potassium permanganate and potassium sulfite.

kmno4 + k2so3 + h2o → mno2 + k2so4 + koh

MN goes from +7 before the reaction to +4 after the reaction by 3

s went from +4 before the reaction to +6 after the reaction rose 2

So the ratio of mn to s coefficient is 2:3

The coefficients of other substances are determined by the conservation of mass.

2kmno4 + 3k2so3 + h2o → 2mno2 + 3k2so4 + 2koh

Because the ratio of mn to s coefficient is 2:3

So the coefficient ratio of k2SO3 to kmno4 is also 3:2

K2SO3 is a mol

KMno4 must be 2A 3 mol

The conditions of the reaction are different, the products generated are also different, and the coefficients are naturally different.

This is a reaction under neutral or alkaline conditions.

If in acidic conditions:

kmno4 + k2so3 + h2so4 → mnso4 + k2so4 + h2o

MN goes from +7 before the reaction to +2 after the reaction by 5

s went from +4 before the reaction to +6 after the reaction rose 2

So the ratio of mn to s coefficient is 2:5

The coefficients of other substances are determined by the conservation of mass.

2kmno4 + 5k2so3 + 3h2so4 → 2mnso4 + 6k2so4 + 3h2o

The H2SO4 in this reaction can also be replaced by HCl, etc.

2kmno4 + 5k2so3 + 6hcl → 2mncl2 + 2kcl + 5k2so4 + 3h2o

In an acidic solution, the reaction of potassium permanganate and sodium sulfite.

Sodium sulfite reacts at low temperature (room temperature) in an acidic solution of potassium permanganate The purple color of the solution recedes and becomes pink. At the same time, due to the different conditions of the reaction, the oxidation products will be partially bisulfite in addition to sulfate.

Sodium sulfite scattering cover in the neutral of potassium permanganate, can also make the dissolved liquid fade. Precipitate leg-colored mNO2 precipitate.

2kmno4+3na2so3+h2o =3na2so4+2mno2+2koh

Sodium sulfite in the alkaline solution of potassium permanganate can change the solution from purple to green to form manganate ion mno42-.

2kmno4+na2so3+2naoh = na2so4+na2mno4+k2mno4+h2o

Satisfied. Thank you!

Potassium permanganate. There is a characteristic: the old mass in the mesogroup section burns different reduction reactions.

The products are different. It is divided into acidic, neutral, and alkaline collapse.

Examples are acidic.

2kmno4+5na2so3+8h2so4=2mnso4+k2so4+8h2o+5na2so4

Hydrogen sulfideand potassium permanganateEquations：5h2s+2kmno4+3h2so4=k2so+2mnso4+8h2o+5s↓。

Hydrogen sulfide deficiency reacts with potassium permanganate to produce sulfur, manganese sulfate, and potassium sulfate.

and water. Hydrogen sulfide with neutral potassium permanganate solution.

The reaction produces sulfur element, and in the case of acidic potassium permanganate solution, sulfate ions can be generated.

Uses of Hydrogen Sulfide:Hydrogen sulfide is used in the synthesis of fluorescent fluorescent powder, electric discharge, optical conductor, photoelectric meter, etc. Organic synthesis of reducing agents.

It is used in metal refining, pesticides, medicine, and catalyst regeneration. General purpose reagents. Preparation of various sulfides.

It is used in the manufacture of inorganic sulfides, and is also used in chemical analysis such as the identification of metal ions.

Categories: Education, Science, >> Science & Technology.

Problem description:1Equations for the products of sodium sulfite and sulfuric acid and potassium permanganate.

2.Potassium dichromate and sulfuric acid and sodium sulfite, the product of Fangkela.

3.Equation for the products of potassium dichromate and sulfuric acid and potassium iodide.

4.Potassium permanganate and the products of sulfuric acid and hydrogen peroxide are kept in line with the slide equation.

5.Equation for the products of potassium permanganate and sodium hydroxide sodium sulfite.

Analysis: In acidic stockings, potassium permanganate and sodium sulfite react:

2kmno4+5k2so3+3h2so4===6k2so4+2mnso4+3h2o

In an acidic environment, potassium permanganate and ki react:

2kmNO4 + 10Ki + 8H2SO4 (dilute) ==2mnSO4 + 5I2 + 6K2SO4 + 8H2O

Equation for the products of potassium permanganate and sodium hydroxide sodium sulfite.

2kmno4+k2so3+2koh===k2so4+2k2mno4+h2o

Equation for the products of potassium permanganate and sulfuric acid and hydrogen peroxide.

2kmno4+5h2o2+3h2so4===2mnso4+k2so4+5o2+8h2o

Equation for the products of potassium dichromate and sulfuric acid and potassium iodide.

k2cro7+6ki+7h2so4===cr2(so4)3+4k2so4+3i2+7h2o

The following reactions mainly occur in a neutral environment.

2kmn04+3h2s==2mNO2+2koh+3s+2h20The potassium permanganate we generally use is acidified with sulfuric acid, because the oxidation of potassium permanganate is stronger in an acidic environment: the following reactions will occur under acidic conditions:

8kmno4+5h2s+7h2so4==8mnso4+4k2so4+12h2o

The equation for the reaction of potassium permanganate with concentrated sulfuric acid: 2kmNO4 + 2H2SO4 = 2KHSO4 + MN2O7 + H2O.

Potassium permanganate is one of the strongest oxidizing agents, as an oxidant is greatly affected by pH, and has the strongest oxidizing ability in acidic solutions. Its corresponding acids permanganate HMNO4 and anhydride Mn2O7 are strong oxidants, which can automatically decompose and heat, and cause combustion in contact with organic matter.

Potassium permanganate has strong ridge rock flush oxidation, and is commonly used as an oxidant in laboratories and industries, and decomposes in case of ethanol. In acidic media, it will slowly decompose into manganese dioxide, potassium salts and jujube oxygen.

Potassium permanganate does not react with dilute sulfuric acid, so there is no equation.

Know acid potassium permanganate? Twigs are generally acidified with dilute sulfuric acid. The reduction product of potassium permanganate under acidity is usually divalent manganese ions, but if it is reduced by other reducing agents, it contains only it and does not react with dilute sulfuric acid.