The coefficient e for a combustion reaction with 100% theoretical air for O_2 is
ID: 524706 • Letter: T
Question
The coefficient e for a combustion reaction with 100% theoretical air for O_2 is a. 12.5 b. 9.0 c. 8.0 d. 0.0 The coefficient a for a combustion reaction with 100% theoretical air for O_2 is a. 12.5 b. 9.0. c. 8.0 d, . 0.0 The coefficient b for a combustion reaction with 400% theoretical air for O_2 is a. 12.5 b. 9.0 c. 8.0 d. 0.0 The adiabatic flame temperature with 100% theoretical air in K is approximately a. 2350 b. 2400 c. 2450 d. cannot be determined. The adiabatic flame temperature with 400% air relative to 100% air is a. higher. b. the same. c. lower. d. cannot be determinedExplanation / Answer
The balanced reaction is
C8H18 + 12.5 [O2 + 3.76 N2] ---> 8CO2 + 9H2O + 47N2
Ans 96 b . 9.00
The coefficient c is for water = 9.00 in this balanced reaction .
As there are 18 atoms of hydrogen in octane , it will lead to the formation of 9 molecules of water in complete combustion with 100% theoretical water .