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Assertion: A pink coloured solution of p...

Assertion: A pink coloured solution of potassium permanganate turns green on passing `O3` through it
Reason `K_(2)MnO_(4)` is oxidised by `O_(3)` to `KMnO_(4)`.

A

Both asseration and reason are correct but reason is not the correct explanation.

B

Both asseration and reason are correct but reason is not the correct explanation.

C

Asseration is correct but reason is wrong.

D

Asseration is wrong but reason is correct.

Text Solution

Verified by Experts

The correct Answer is:
d
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Assertion (A) : Pink coloured solution of potassium permanganate turns green on passing O_3 through it. Reason (R) : K_2MnO_4 is oxidised by O_3 to KMnO_4 .

K_(2)MnO_(4) can be converted to KMnO_(4) by

Assertion : In acid solution, permanganate is reduced to Mn^(2+) by an excess of reducing agent. Reason : MnO_(4)^(-) reduced in Mn^(2+) in acidic medium and the product in the presence of an excess of permanganate is MnO_(2) .

Write balanced redox reactions for each of the following reactions: (a) Potassium dichromate (K_(2)Cr_(2)O_(7)) reacts with hydroiodic acid (HI) to produce potassium iodide, chromium (III) iodide, and solid iodine, I_(2)(s) . (b) A purple solution of aqueous potassium permanganate (KMnO_(4)) reacts with aqueous sodium sulphite (Na_(2)SO_(3)) in basic solution to yield the green magnanate ion (MnO_(4)^(2-)) and sulphate ion (SO_(4)^(2-)) . (c ) Sn^(2+) (aq) reduce I_(4)^(Ө)(aq) to I^(Ө)(aq) and is oxidised to Sn^(4+) . (d) H_(2)O_(2)(aq) oxidises Mn^(2+)(aq) to MnO_(2) in basic medium. (e) H_(2)O_(2)(aq) reduces Cr_(2)O_(7)^(2-) (aq) to green coloured Cr^(3+)(aq) in acidic medium.