Chemistry - Complete d-block Question with Solution | TestHub
(X) is very important laboratory reagent which is prepared by its naturally occuring ore which is called pyrolusite. Pyrolusite when fused with alkali in the presence of O2, green compound (Y) is produced. (Y) is converted into (X) by electrolysis or by using ozone.
On small scale is prepared by disproportion of in acidic solution. Which of the following is produced by disproportion of in slight alkaline solution.
Options:
Answer:
Solution:
Question Explanation:
Identifying the products of manganate disproportionation.
Concept:
Disproportionation of Manganate.
Solution: Compound Y , manganate , is stable in strongly alkaline solutions but disproportionates in acidic or even neutral solutions. The products are the species with a higher oxidation state (permanganate, ) and a lower oxidation state (manganese dioxide, ).
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