An important process for the production of acrylonitrile (C_{3}H_{3}N) is given by the following equation:

2C_{3}H_{6}(*g*) + 2NH_{3}(*g*) + 3O_{2}(*g*) → 2C_{3}H_{3}N(*g*) + 6H_{2}O(*g*)

A 150.-L reactor is charged to the following partial pressures at 25°C:

What mass of acrylonitrile can be produced from this mixture (MPa = 10 ^{6} Pa)?

- According to the ideal gas equation, pressure is directly proportional to # of moles. (as P increases, n increases at constant V and T (Avogadro's Law))
- Therefore, whichever has the least amount of P will be considered as the limiting reactant. (C
_{3}H_{6}at 0.500 MPa). MPa here is a unit of P - Moles of the limiting reactant can be solved using the ideal gas equation and the conditions provided
- Mass of acrylonitrile can be solved using this moles of limiting reactant and the balanced equation provided.

Gas Stoichiometry