KMnO4 What is the explanation of an oxidizer ?

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Some oxidants: - Solid liquid gaseous ( i) manganese dioxide [ MnO2] (i) nitric acid [ HNO3] (i) oxygen [ O2] (ii) potassium permanganate [ KMnO4] (ii) concentrated sulfuric acid [ H ] (ii) ozone [ O3] (iii) potassium di-chromate [ K2Cr2O7] (iii) hydrogen peroxide [ H2O2] (iii) fluorine [ F] (iv) red lead [ Pb3O4] (iv) liquid bromine [ Br2] i ) Chlorine [ Cl2] 6 Examples of oxidative power of some oxidants: - Example of oxidation of oxidants A substance oxidizes by oxidizing O2 C + O2 = CO2 C , oxidizes C → CO2 HNO3 C + 4HNO3 = CO2 + 4NO2 + 2H2O C , concentrates C → CO2 H2SO4 S + 2H2SO4 = 3SO2 + 2H2O S - oxidizes , S → SO2 H2O2 PbS + 4H2O2 = PbSO4 + 4H2O PbS - oxidizes , PbS → PbSO4 Cl2 H2S + Cl2 = 2HCl + S2 - H2. একই S The same substance can never be oxidized again and again in the form of toxins: one oxidant in one reaction can be used as an oxidizer in another reaction. For example , during the reaction of Br2 with SO2 , SO2 decomposes Br2 into HBr . SO2 is a toxic substance in this reaction .
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How do you prepare solution of 0.1N KMnO4?

Description : How do you prepare solution of 0.1N KMnO4?

Last Answer : Dissolve 31,6 g KMnO4 in 1 kg acidified distilled water.

How do one prepare a solution of 0.01M KMnO4?

Description : How do one prepare a solution of 0.01M KMnO4?

Last Answer : Dissolve 1,58 g KMnO4 for analysis in 1 L distilled water at 20 oC.

How do you prepare solution of 0.1N KMnO4?

Description : How do you prepare solution of 0.1N KMnO4?

Last Answer : Dissolve 31,6 g KMnO4 in 1 kg acidified distilled water.

How do one prepare a solution of 0.01M KMnO4?

Description : How do one prepare a solution of 0.01M KMnO4?

Last Answer : Dissolve 1,58 g KMnO4 for analysis in 1 L distilled water at 20 oC.

What is the product of a reaction between Cu3PO4 and KMnO4?

Description : What is the product of a reaction between Cu3PO4 and KMnO4?

Last Answer : The chemical reaction is:Cu3PO4 + 3 KMnO4 = 3 CuMnO4 + K3PO4

How many mols in 100g of KMnO4?

Description : How many mols in 100g of KMnO4?

Last Answer : 0.006327754

Methemoglobin is formed as a result of the oxidation of haemoglobin by oxidation agent: (A) Oxygen of Air (B) H2O2 (C) K4Fe(CN)6 (D) KMnO4

Description : Methemoglobin is formed as a result of the oxidation of haemoglobin by oxidation agent: (A) Oxygen of Air (B) H2O2 (C) K4Fe(CN)6 (D) KMnO4

Last Answer : Answer : C

KMnO4 can be used as a/an - (1) insecticide (2) fertiliser (3) pesticide (4) disinfectant

Description : KMnO4 can be used as a/an - (1) insecticide (2) fertiliser (3) pesticide (4) disinfectant

Last Answer : (4) disinfectant Explanation: Potassium permanganate is an inorganic chemical compound with the formula KMnO4. As an oxidant, potassium permanganate can act as an antiseptic. For example, dilute solutions ... infections of the hands or feet. It is used extensively in the water treatment industry.

What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper? (1) There is a crackling sound (2) There is a violent explosion (3) There is no reaction (4) The paper ignites

Description : What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper? (1) There is a crackling sound (2) There is a violent explosion (3) There is no reaction (4) The paper ignites

Last Answer : (2) There is a violent explosion Explanation: When solid Potassium Permanganate (KMnO4) is mixed with pure glycerol or other simple alcohols, it will result in a violent combustion ... Permanganate is an extremely powerful oxidizer which spontaneously ignites after coming in contact with glycerol.

KMnO4 can be used as – (1) Insecticide (2) Fertilizer (3) Pesticide (4) Disinfectant

Description : KMnO4 can be used as – (1) Insecticide (2) Fertilizer (3) Pesticide (4) Disinfectant

Last Answer : (4) Disinfectant Explanation: Potassium permanganate is an inorganic chemical compound with the formula KMnO4. As an oxidant, potassium permanganate can act as an antiseptic. For example, dilute ... of the hands or feet. Potassium permanganate is used extensively in the water treatment industry.

Why pcc cannot oxidise methanol to methane and while KMnO4 can ?

Description : Why pcc cannot oxidise methanol to methane and while KMnO4 can ? 

Last Answer : Ans. This is because pcc is a mild oxidising agent and can oxide methanol to methanal only. While KMnO4 being strong oxidising agent oxidises it to methanoic acid.

Why pcc cannot oxidise methanol to methane and while KMnO4 can ?

Description : Why pcc cannot oxidise methanol to methane and while KMnO4 can ?

Last Answer : This is because pcc is a mild oxidising agent and can oxide methanol to methanal only. While KMnO4 being strong oxidising agent oxidises it to methanoic acid. 

Which of the following statements is false about benzylamine?(a) can be prepared by reduction of benzonitrile with LiAlH4. (b) cannot be prepared by reduction of benzamide with LiAlH4. (c) reacts with nitrous acid to give benzyl alcohol. (d) reacts with KMnO4 to give benzoic acid.

Description : Which of the following statements is false about benzylamine? (a) can be prepared by reduction of benzonitrile with LiAlH4. (b) cannot be prepared by reduction of benzamide with LiAlH4. (c) reacts with nitrous acid to give benzyl alcohol. (d) reacts with KMnO4 to give benzoic acid.

Last Answer : cannot be prepared by reduction of benzamide with LiAlH

Which of the following statements is False/Incorrect about nitrobenzene? (a) is formed by nitration of benzene at temperatures below 60°C. (b) can be further nitrated to give m-dinitrobenzene. (c) can be oxidized with KMnO4 to give benzoic acid. (d) can be reduced with Sn/HCl to give aniline.

Description : Which of the following statements is False/Incorrect about nitrobenzene? (a) is formed by nitration of benzene at temperatures below 60°C. (b) can be further nitrated to give m-dinitrobenzene. (c) can be oxidized with KMnO4 to give benzoic acid. (d) can be reduced with Sn/HCl to give aniline.

Last Answer : can be oxidized with KMnO4 to give benzoic acid

Which of the following statements is false about toluene? (a) can be prepared by treating benzene with methyl chloride in the presence of AlCl3. (b) is converted to benzoic acid on refluxing with acidic KMnO4 solution. (c) on refluxing with concentrated H2SO4 gives a mixture of ortho and para toluenesulfonic acid. (d) can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene.

Description : Which of the following statements is false about toluene? (a) can be prepared by treating benzene with methyl chloride in the presence of AlCl3. (b) is converted to benzoic acid on refluxing with ... (d) can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene.

Last Answer : can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene

Uric acid on oxidation with alkaline KMnO4 forms : (a) Urea (b) Barbituric acid (c) Allantoin (d) Caffeine

Description : Uric acid on oxidation with alkaline KMnO4 forms : (a) Urea (b) Barbituric acid (c) Allantoin (d) Caffeine

Last Answer : Allantoin

Aldehydes undergo oxidation with KMnO4/H+ to give (a) Alcohols (b) Acetals (c) Ketones (d) Acids

Description : Aldehydes undergo oxidation with KMnO4/H+ to give (a) Alcohols (b) Acetals (c) Ketones (d) Acids

Last Answer : Acids

Which of the following reagents readily react with ethyl methyl ether? (a) NaOH (b) Conc HI (c) KMnO4 (d) H2O

Description : Which of the following reagents readily react with ethyl methyl ether? (a) NaOH (b) Conc HI (c) KMnO4 (d) H2O

Last Answer : Conc HI

Ethylene glycol undergoes oxidation with hot acidic KMnO4 to form : (a) Formic acid (b) Formaldehyde(c) Acetic acid(d) Acetaldehyde

Description : Ethylene glycol undergoes oxidation with hot acidic KMnO4 to form : (a) Formic acid (b) Formaldehyde (c) Acetic acid (d) Acetaldehyde

Last Answer : Formic acid

Which of the following reagents can be used to oxidize 1° alcohols to aldehydes? (a) KMnO4 (b) MnO2 (c) K2Cr2O7 (d) PCC

Description : Which of the following reagents can be used to oxidize 1° alcohols to aldehydes? (a) KMnO4 (b) MnO2 (c) K2Cr2O7 (d) PCC

Last Answer : PCC

Which one of the following compounds will (a) decolorizes dilute cold KMnO4 ; (b) decolorizes bromine water ; and (c) gives a white precipitate with ammoniacal AgNO3 solution. (a) 1-Hexene (b) 1-Hexyne (c) 2-Hexene (d) 2-Hexyne

Description : Which one of the following compounds will (a) decolorizes dilute cold KMnO4 ; (b) decolorizes bromine water ; and (c) gives a white precipitate with ammoniacal AgNO3 solution. (a) 1-Hexene (b) 1-Hexyne (c) 2-Hexene (d) 2-Hexyne

Last Answer : 1-Hexyne

Which of the following alkenes gives only acetic acid on oxidation with hot concentrated KMnO4. (a) Ethylene (b) 1-Butene (c) Propene (d) 2-Butene

Description : Which of the following alkenes gives only acetic acid on oxidation with hot concentrated KMnO4. (a) Ethylene (b) 1-Butene (c) Propene (d) 2-Butene

Last Answer : 2-Butene

Which of the following reagents will react with propene? (a) Hot alkaline KMnO4 (b) Sodium metal (c) Cold dilute HNO3 (d) LiAlH4

Description : Which of the following reagents will react with propene? (a) Hot alkaline KMnO4 (b) Sodium metal (c) Cold dilute HNO3 (d) LiAlH4

Last Answer : Hot alkaline KMnO4

The disappearance of the purple color of KMnO4 in its reaction with alkene is known as (a) Markovnikov test (b) Grignard test (c) Baeyer test (d) Wurtz test

Description : The disappearance of the purple color of KMnO4 in its reaction with alkene is known as (a) Markovnikov test (b) Grignard test (c) Baeyer test (d) Wurtz test

Last Answer : Baeyer test

Baeyer's reagent is (a) dilute KMnO4 (b) HCl + ZnCl2 (c) Br2 in CCl4 (d) NH2NH2

Description : Baeyer's reagent is (a) dilute KMnO4 (b) HCl + ZnCl2 (c) Br2 in CCl4 (d) NH2NH2

Last Answer : dilute KMnO4

Disappearance of pink colour of water of a well due of KMnO4 indicates that water contains (A) Acidity (B) Alkalinity (C) Turbidity (D) Organic matter

Description : Disappearance of pink colour of water of a well due of KMnO4 indicates that water contains (A) Acidity (B) Alkalinity (C) Turbidity (D) Organic matter

Last Answer : (D) Organic matter

Which reagent is used for conversion of benzaldehyde into toluene? a. KMnO4/NaOH b. NH2NH2/KOH c. HIO4 d. V2O5

Description : Which reagent is used for conversion of benzaldehyde into toluene? a. KMnO4/NaOH b. NH2NH2/KOH c. HIO4 d. V2O5

Last Answer : b. NH2NH2/KOH

What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ? (1) There is a crackling sound. (2) There is a violent explosion. (3) There is no reaction. (4) The paper ignites.

Description : What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ? (1) There is a crackling sound. (2) There is a violent explosion. (3) There is no reaction. (4) The paper ignites.

Last Answer : There is a violent explosion.

KMnO4 can be used as a/an (1) insecticide(2) fertiliser (3) pesticide (4) disinfectant

Description : KMnO4 can be used as a/an (1) insecticide(2) fertiliser (3) pesticide (4) disinfectant

Last Answer : disinfectant