MEDIUMMCQ SINGLEJEE Mains ChemistryInorganic ChemistryHydrogenPrevious Year Questions
The volume of oxygen evolved at STP by decomposition of 0.68 g ‘20 volume’ hydrogen peroxide solution is (MHT CET 2014)
A.2.24 mL✓ Correct
B.22.4 mL
C.224 mL
D.2240 mL
Explanation
2 2 2 2 2mol 1mol 2 34 22400 mL 68g 2H O 2H O O x -> At STP, 68 g H2O2 produced O2 = 22400 mL At STP, 0.68 g H2O2 will produce 2 22400 0.68 O 224mL 68 x