What volume of oxygen at STP is required to affect the combustion of 1 litres of ethylene [C2H4] at 273∘C and 380 mm of Hg pressure?
C2H4+3O2→2CO2+2H2O
Let no. of mole of is n
pressure = 380760 atm=12 atm
T = 273+273 = 546K
V = 1 L
R = 0.0821
Apply
PV = nRT
= n
0.0821
546
n = mole
for one mole of combustion of , 3mole of
is required
so for
0.0110 mole = 3 mole O2 required
= 0.0332mole
volume of one mole gas at STP = 22.4L
volume of 0.0332 mole at STP = 22.4
= 0.744L