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Potassium permanganate acts as an oxidan...

Potassium permanganate acts as an oxidant in neutral, alkaline as well as acidic medium. The final products obtained from it in the three conditions are, respectively

A

` MnO^(2-)`

B

` Mn^(3+) and Mn^(2+)`

C

` Mn^(2+) and Mn^(3+)`

D

` MnO_2 and Mn^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
D
In acidic medium :
` Koverset(+7) MnO_4 to overset(+2) MnSO_4`
In weak basic medium :
`KMnO_4 to MnO_2`
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Potassium permanganate is a powerful oxidising agent in neutral, acidic and alkaline medium. In the lab, students were asked to convert an iodate. One of the students obtained I_2 instead of iodate:- What is the reaction carried out by the students who got iodate? Write the chemical equation.

Pottassium permangante is a powerful oxdising agent in neutral, acidic and alkaline medium. In the lab, students were asked to convert an iodate. One of the students obtained I_2 instead of iodate:- What may be the reaction carried out by the student who obtained I_2 as one of the products?

Knowledge Check

  • The value of 'n' for the parent and finally stable element obtained from the decay of (4n +1) series respectively is

    A
    60, 52
    B
    58, 54
    C
    58, 51
    D
    60, 54

  • Assertion : In the reaction between potassium permanganate and potassium iodide, permanganate ions act as oxidising agent . Reason : Oxidation state of manganese changes from +2 to +7 during the reaction.

    A
    If both (A) and (R) are correct and (R) is the correct explanation of (A).
    B
    If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
    C
    If (A) is correct, but (R) is incorrect.
    D
    If both (A) and (R) are incorrect.

  • The oxidation state of chromium in the final product formed in the reaction between Kl and acidified potassium dichromate solution is

    A
    `+4`
    B
    `+6`
    C
    `+2`
    D
    `+3`

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    How do you account for the following observations? a) Though alkaline potassium permanganate and acidic potassium permanganate both are used as oxidants, yet in the manufacture of benzoic acid from toluene we use alcoholic potassium permanganate as an oxidant. Why? Write a balanced redox equation for the reaction. b) When concentrated- sulphuric acid is added to an inorganic mixture containing chloride, we get colourless pungent smelling gas 'HCl', but if the mixture contains bromide, then we get red vapours of bromine. Why?

    In the manufacture of sulphuric acid (H_2SO_4) , the final product obtained is oleum. What is oleum?

    The oxidation state of chromium in the final product formed in the reaction between KI and acidified potassium dichromate solution is

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