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Why is potassium permanganate used for c...

Why is potassium permanganate used for cleaning of water tanks?

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It can remove dissolved iron `(Fe^(2+))` ions, manganese `(Mn^(2+))` ions and `H_2S` present is water by oxidation reaction. After oxidation, these metals ions aggregate to form solid particles, which can be filtered off. It is also used to control growth of bacteria in water storage tank.
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Answer the following questions : Why is potassium permanganate used during cleaning water tanks ?

Give scientific reasons: A potassium permanganate solution in water is a homogeneous solution in water is a homogeneous mixture, while a mixture of oil and water is a heterogeneous mixture

Answer the following question : Classify the following into homogeneous solution and heterogeneous solution: Soda water, potassium permanganate solution, milk, alcohol in water, ink solution, wheat flour in water.

In laboratory, a student added 3 mL ethanol and 5 mL sodium carbonate in a test tube and warmed the mixture for few minutes. He then slowly added few drops of potassium permanganate to this warm solution with constant stirring. He observed that the pink colour of potassium permanganate had disappeared. This is because ______________ .

Answer the following questions : Acidified potassium permanganate (KMnO_4) is a chemical oxidant and explain, how acidified potassium permanganate oxidise ferrous sulphate (FeSO_4) . Accordingly write a new definition of oxidation and reduction.

On heating potassium permanganate, one of the following compound is NOT obtained?

How will you prepare potassium permanganate from manganate.

Apparatus: A beaker, potassium permaganate crystals, a burner, water, etc. : Procedure: Take some water in a beaker. Heat the beaker slowly on a gas burner. Drop a few crystals of potassium permaganate into the water. Now watch the water in the beaker carefully. What do you see?

TARGET PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-Apply your Knowledge
  1. Apparatus: Two test tubes, balance, measuring cylinder, etc. Chemica...

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  2. Which is the oxidant used for purification of drinking water?

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  3. Why is potassium permanganate used for cleaning of water tanks?

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  4. Which compound is oxidized by KMnO4 in presence of acid in the followi...

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  5. Look at chemical equation: "Vegatable oil"((l))+H(2(g)) overset(60^...

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  6. Same exampels of redox reaction are given identify the reductants and ...

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  7. Some more examples of redox reaction are as follows. Identify the redu...

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  8. If oxidation means losing electrons, what is meant by reduction?

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  9. Write the reaction of formation of Fe^2+) by the reduction Fe3+ by mak...

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  10. The luster of the surface of the aluminium utensils in the house is lo...

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  11. Apparatus: Four test tubes, four small iron nails, rubber cork, etc. ...

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  12. Apparatus: Four test tubes, four small iron nails, rubber cork, etc. ...

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  13. Have you seen the effect of redox reaction in your everyday life?

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  14. How are the blackened silver utensils and patinated (greenish) brass u...

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  15. Prepare aqueous solutions of various solid salts availble in the labor...

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  16. What are the types of molecules of elements and compounds?

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  17. What is meant by valency of elements?

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  18. What is the requirement for writing molecular formulae of different co...

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  19. Apparatus: Thermometer, evaporating dish, tripod stand, funnel, Bunsen...

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  20. Observe and keep a record of the physical and chemical changes that yo...

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