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MHT CET202015 Oct 2020Evening ShiftChemistrySome Basic Concepts of ChemistryActual

What will be the volume of oxygen gas produced, If the reaction 2 KClO _ 3( ~s ) 2 KCl _ ( s ) +3 O _ 2( ~g ) H ^ =-78 k J is carried out at S.T.P.?

Options

  1. A48.0 L
  2. B44.8 L
  3. C22.4 L
  4. D67.2 L

Correct answer

D. 67.2 L

Step-by-step solution

2 KClO _ 3(s) 2 KCl _ (s) +3 O _ 2(g) At STP, 1 mole of O ₂=22.4 ~L 3 mole of O ₂=22.4 3=67.2 ~L

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