- #1
marellasunny
- 255
- 3
Homework Statement
Fuel general formula: [itex]C_x H_y O_z[/itex]
How do I calculate the mass proportion of oxygen in the air participating in the following reaction [itex]\xi_{O_2,air}[/itex]?
$$C_x H_y O_z+(x+\frac{y}{4}-\frac{z}{2}).O_2 \rightarrow xCO_2+\frac{y}{2}H_2O$$
Homework Equations
Mass proportion of oxygen in fuel:
$$Oxygen=\frac{M_{oxygen}}{M_{fuel}} .z $$
M-molecular weight
z- stoichiometric coefficient
The Attempt at a Solution
The number of moles in the air would be:[itex](x+\frac{y}{4}-\frac{z}{2})[/itex]So,$$ \xi_{O_2,air}=(x+\frac{y}{4}-\frac{z}{2}) * \frac{M_{O2}}{M_{air/fuel?}}
$$
Is this correct? Is the mass proportion calculated above EQUAL to the stoichiometric air requirement?
Last edited: