COMEDK2013ChemistrySome Basic Concepts of Chemistry

What is the volume of ' 20 volume H ₂ O ₂ ' required to get 5000 ~cm ³ of oxygen at STP?

Options

A250 ~cm ³
B50 ~cm ³
C100 ~cm ³
D125 ~cm ³

Correct answer

A. 250 ~cm ³

Step-by-step solution

20 volume of H ₂ O ₂ means that, 1 ~L of H ₂ O ₂ on decomposition gives 20 L of oxygen. 5 ~L of oxygen will be obtained from aligned &= 5 20 1=0.250 ~L ₂ of H ₂ O ₂ &=250 ~cm ³ of 20 volume H ₂ O ₂ aligned

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