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Question

What will be the volume (in litres) of oxygen liberated (at STP) when 17 grams of H2O2 decomposed on heating?


  1. 5.6 L

  2. 22.7L

  3. 11.35L

  4. 45.4L


Solution

The correct option is A

5.6 L


2 x 34 g of H2O2 gives 22400 ml of O2

So, 17 g of H2O2 = 2240068X 17 ml O2 =5600ml=5.6 L

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