SATHEE: The dand fblock elements - Result Question 46

The dand fblock elements - Result Question 46

####46. The reaction of aqueous $K M n O_{4}$ with $H_{2} O_{2}$ in acidic conditions gives:

[2014]

(a) $M n^{4 +}$ and $O_{2}$

(b) $M n^{2 +}$ and $O_{2}$

(c) $M n^{2 +}$ and $O_{3}$

(d) $M n^{4 +}$ and $M n O_{2}$

Show Answer

Solution:

(b) $2 K M n O_{4} + 3 H_{2} S O_{4} + 5 H_{2} O_{2} ⟶$

$K_{2} S O_{4} + 2 M n S O_{4} + 8 H_{2} O + 5 O_{2}$

i.e. $M n^{2 +}$ ion and $O_{2}$ .

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