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30 g Ba(MnO(4))(2) sample containing ine...

30 g `Ba(MnO_(4))_(2)` sample containing inert impurity is completely reacting with 100 ml of "28 volume" strength of `H_(2)O_(2)` in acidic medium then what will be the percentage purity of `Ba(MnO_(4))_(2)` in the sample ? (Ba=137, Mn=55, O=16)

A

`10%`

B

`40%`

C

`62.5%`

D

`80%`

Text Solution

Verified by Experts

The correct Answer is:
C
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H_(2)O_(2) acts as both oxidising and reducing agent. As oxidising agent, its product is H_(2)O but as redusing agent, its product is O_(2) . Volume strength has great significance for chemical reactions. The strength of '10 V means 1 volume (or litre) of H_(2)O_(2) on decomposition (H_(2)O_(2) rarr H_(2)O+1/2 O_(2)) gives 10 volumes (or litre) of oxygen at NTP. 15 g Ba(MnO_(4))_(2) sample containing inert impurity is completely reacting with 100 mL of '11.2 V' H_(2)O_(2) , then what will be the % purity of Ba(MnO_(4))_(2) in the sample: (Atomic mass: Ba=137, Mn=55)

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