Mole ConceptHard

Question

 Nine volumes of gaseous mixture consisting of gaseous organic compound A and just sufficient amount of oxygen required for complete combustion, yielded on burning 4 volumes of CO2, 6 volumes of water vapours and 2 volumes of N2(all volumes measured at the same temperature and pressure). If the compound contain C, H. and N only, the molecular formula of compound A is -

Options

A.C2H3N2
B.C2H6N2
C.C3H6N2
D.C3H6N

Solution

CxHyNz + (x+ y/4)O2  → xCO2 + (y/2)H2O + (z/2)N2
  9v 9vx 9vy/2 9vz/2
  0 4v  6v 2v

C4H12N4 or C2H6N2

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