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The weight of 1 litre of ozonised oxygen...

The weight of 1 litre of ozonised oxygen at STP was found to be 1.5gm. When 100 ml of this mixture at STP was treated with turpentine oil, the volume was reduced to 90 ml. The molecular weight of ozone is

A

49

B

47

C

46

D

47.9

Text Solution

Verified by Experts

The correct Answer is:
C
Volume of `O_(3)` in 100ml of ozonised oxygen = 100 - 90 =10ml
Volume of `O_(3)` in 1000ml of ozonised oxygen = 100 ml
Volume of `O_(3)` in 1000 ml of `O_(2)` at STP = `(900 xx 32)/(22400)` = 1.2869 grams
Weight of 100 ml of `O_(3)` at STP = 1.5 - 1.286=0.214 grams
100ml of `O_(3)` at STP ................ ? = 47.94 grams
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