1.

Volume of O2 gas liberated at STP by the decomposition of 15ml of 20 volumes H2O2 solutions is

Answer»

20 volume H2O2 means that 1ml of this H2O2 will release 20ml O2 at STP. 

therefore decomposition of 15ml of 20volume H2O2 will give 15x20 = 300ml O2.



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