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Grade 11Physical Chemistry

To obtain maximum mass of NO2 from a given mass of a mixture of NH3 and O2, the ratio of mass of NH3 to O2 should be
NH3 + O2 → NO2 + H2O

Profile image of Ankit Sharma
8 Years agoGrade 11
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1 Answer

Profile image of Chirag Gupta
7 Years ago
Balanced chemical equation is:
NH3 + 7 O2 → 4 NO2 + 6 H2O
i.e., NH3 + (7/4) O2 → NO2 + (3/2) H2O
 
To obtain 1 mole NO2, we need 1 mole NH3 and 7/4 mole O2.
Mass of 1 mole NH3 = 17 g
Mass of 7/4 mole of O2 = 56 g
So, ratio of mass of NH3 to O2 is 17:56.