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For obtaining 100% pure H2O2, the last traces of water are removed by
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a
distillation
b
heating on water both
c
distillation under reduced pressure
d
sudden cooling in freezing mixture of ether/solid CO2
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Correct option is D
90% solution is cooled with solid CO2+ ether bath. Cooling is continued till crystallization sets in. Crystals are separated, melted and refrozen for further concentration.Similar Questions
When CO2 is bubbled through a solution/suspension of barium peroxide in water
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