
How is $KMn{{O}_{4}}$ prepared from pyrolusite ore?
Answer
411.9k+ views
Hint: The name of $KMn{{O}_{4}}$ is potassium permanganate and it is prepared from the pyrolusite ore whose formula is $Mn{{O}_{2}}$. There are some steps that are followed in which alkali metal hydroxide and oxidizing agents are also required.
Complete answer:
Pyrolusite ore is an important ore in which we can prepare potassium permanganate as Potassium permanganate whose formula is $KMn{{O}_{4}}$ and is an inorganic compound. Some other names of potassium permanganate are Condy’s crystals and permanganate of potash.
As we already know, manganese dioxide ($Mn{{O}_{2}}$), which can also be found in the mineral pyrolusite, is used to make potassium permanganate ($KMn{{O}_{4}}$ ).
The pyrolusite ore is heated in air or with another type of oxygen, such as potassium nitrate or potassium chlorate, after being fused with an alkali such as potassium hydroxide. Potassium manganate is produced as a result of this process. The reaction is given below:
$2Mn{{O}_{2}}+4KOH+{{O}_{2}}\to 2{{K}_{2}}Mn{{O}_{4}}+2{{H}_{2}}O$
This potassium manganate is now electrolytically oxidized in alkaline media to produce potassium permanganate. The reaction is given below:
$2{{K}_{2}}Mn{{O}_{4}}+2{{H}_{2}}O\to 2KMn{{O}_{4}}+2KOH+{{H}_{2}}$
Hence, these are the steps that are used to convert pyrolusite ore to potassium permanganate.
Additional information:
Since potassium permanganate is a powerful oxidizing agent, it can be used as an oxidant in a broad range of chemical reactions. When conducting a redox reaction with potassium permanganate, the dark purple solution becomes colorless and then into a brown solution, demonstrating its oxidizing ability.
Note:
We should also be aware that under acidic conditions, potassium manganate may be oxidized by chlorine or disproportion. The following is the chlorine oxidation reaction:
$2{{K}_{2}}Mn{{O}_{4}}+C{{l}_{2}}\to 2KMn{{O}_{4}}+2KCl$
Complete answer:
Pyrolusite ore is an important ore in which we can prepare potassium permanganate as Potassium permanganate whose formula is $KMn{{O}_{4}}$ and is an inorganic compound. Some other names of potassium permanganate are Condy’s crystals and permanganate of potash.
As we already know, manganese dioxide ($Mn{{O}_{2}}$), which can also be found in the mineral pyrolusite, is used to make potassium permanganate ($KMn{{O}_{4}}$ ).
The pyrolusite ore is heated in air or with another type of oxygen, such as potassium nitrate or potassium chlorate, after being fused with an alkali such as potassium hydroxide. Potassium manganate is produced as a result of this process. The reaction is given below:
$2Mn{{O}_{2}}+4KOH+{{O}_{2}}\to 2{{K}_{2}}Mn{{O}_{4}}+2{{H}_{2}}O$
This potassium manganate is now electrolytically oxidized in alkaline media to produce potassium permanganate. The reaction is given below:
$2{{K}_{2}}Mn{{O}_{4}}+2{{H}_{2}}O\to 2KMn{{O}_{4}}+2KOH+{{H}_{2}}$
Hence, these are the steps that are used to convert pyrolusite ore to potassium permanganate.
Additional information:
Since potassium permanganate is a powerful oxidizing agent, it can be used as an oxidant in a broad range of chemical reactions. When conducting a redox reaction with potassium permanganate, the dark purple solution becomes colorless and then into a brown solution, demonstrating its oxidizing ability.
Note:
We should also be aware that under acidic conditions, potassium manganate may be oxidized by chlorine or disproportion. The following is the chlorine oxidation reaction:
$2{{K}_{2}}Mn{{O}_{4}}+C{{l}_{2}}\to 2KMn{{O}_{4}}+2KCl$
Recently Updated Pages
Master Class 11 Accountancy: Engaging Questions & Answers for Success

Glucose when reduced with HI and red Phosphorus gives class 11 chemistry CBSE

The highest possible oxidation states of Uranium and class 11 chemistry CBSE

Find the value of x if the mode of the following data class 11 maths CBSE

Which of the following can be used in the Friedel Crafts class 11 chemistry CBSE

A sphere of mass 40 kg is attracted by a second sphere class 11 physics CBSE

Trending doubts
10 examples of friction in our daily life

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells

State and prove Bernoullis theorem class 11 physics CBSE

What organs are located on the left side of your body class 11 biology CBSE

How many valence electrons does nitrogen have class 11 chemistry CBSE
