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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 ,MnO_(2), MN^(2+)`

B

` MnO_(4)^(2-) , Mn^(3+) , Mn^(2+)`

C

`MnO_(2),MnO_(4)^(2-) ,Mn^(3+)`

D

`MnO ,MnO_(4)^(2-) , Mn^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
A
In neutral medium : ` 2 MnO_(4)+ 3 MnSO_(4) + 2H_2 O to K_2 SO_(4) + 5 mnO_(2)`
In alkaline medium ` : 2 MnO_(4) + H_2 O to 2MnO_(2) + 2KOH + 3O`
in acidic medium `: 2 KMnO_(4) + 3H_2 SO_(4) to K_2 SO_(4) + 2Mn SO_(4) + 5H_2 O + 5O`
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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

  • Potassium permanganate acts as an oxidant in alkaline and acidic media. The final products formed from KMnO_4 in the two conditions are respectively :

    A
    ` MnO^(2-)`
    B
    ` Mn^(3+) and Mn^(2+)`
    C
    ` Mn^(2+) and Mn^(3+)`
    D
    ` MnO_2 and Mn^(2+)`

  • 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.

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