Liquid ethanol

(C_(2)H_(5)OH)

at

25\\\\deg C

, 1 atm enters an insulated reactor operating at steady state and burns completely with air entering\ at

370K,1atm

. The combustion products exit at

1400K

. Kinetic and potential energy effects can be neglected and the air can be\ modeled as

21%O_(2)

and

79%N_(2)

on a molar basis.\ Determine the percent excess air used.

Liquid ethanol (C2H5OH) at 25C,1atm enters an insulated reactor operating at steady state and burns completely with air entering at 370K,1ktm. The combustion products exit at 1400K. Kinetic and potential energy effects can be neglected and the air can be modeled as 21%O2 and 79%N2 on a molar basis. Determine the percent excess air used. %