1. At a coal-fired power plant, assume that lignite coal is being burned as shown in the following stoichiometric combustion reaction equation, which...

1. At a coal-fired power plant, assume that lignite coal is being burned as shown in the following stoichiometric combustion reaction equation, which assumes that the nitrogen in the lignite and in the air is all converted to NO and that combustion is complete:

CH0.96O0.18N0.016S0.012 + x (O2 + 3.78 N2) → CO2 + 0.48 H2O + 0.016 NO + 0.012 SO2 + 3.78x N2

(a) (5 pts) What is the value of the coefficient, x?

(b) (10 pts) To ensure complete combustion, air must be provided in an amount greater than that required by the stoichiometry shown in the above reaction equation. In this case, assume that the air is provided at an equivalence ratio of 0.95, meaning that the air is provided at a ratio of (1/0.95) times that required by chemical stoichiometry (meaning that about 5.3% excess air must be provided). Write a revised combustion reaction equation that takes into account the excess air requirement.

(c) (5 pts) Based on your revised reaction equation, how many moles of combustion gas are produced per mole of carbon combusted?

(d) (5 pts) Again based on your revised reaction equation, what is the mole fraction (moles/mole) of each gas (CO2, H2O, etc.) in the combustion gas?

(e) (5 pts) Again based on your revised reaction equation, what is the concentration (ppm) of each gas in the combustion gas?