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ICSE Class 10 Chemistry 2013 Paper

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O2\mathrm{O}_2 is evolved by heating KClO3\mathrm{KClO}_3 using MnO2\mathrm{MnO}_2 as a catalyst
2KClO3→MnO22KCl+3O22 \mathrm{KClO}_3 \xrightarrow[\mathrm{MnO}_2]{} 2 \mathrm{KCl} + 3 \mathrm{O}_2
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Question : 79 of 84
Marks: +1, -0
Calculate the volume occupied by 0.01 mole of CO2\mathrm{CO}_2 at STP.
Solution:  
∵1\because 1 mole of CO2\mathrm{CO}_2 occupied at STP
=22.4 l= 22.4\ \mathrm{l}
∴0.01\therefore 0.01 mole of CO2\mathrm{CO}_2 occupied at STP
  =22.4×0.01\;= 22.4 \times 0.01
  =0.224 l\;= 0.224\ \mathrm{l}
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