Stoichiometry

  • What are the mass fractions of oxygen and nitrogen in air?
  • What is the mean molecular weight of air?
  • What is the ratio of moles of nitrogen to oxygen in air? What is the ratio of moles of air to moles of oxygen in air?
  • Convert 5.5 kg of CO2 to kmoles of CO2
  • What is the stoichiometric mixture fraction of a methane-air flame?
  • What is the formula for computing mass fractions $y_k$ given mole fractions $x_k$?
  • True or False: the equivalence ratio formula should use fuel and air on a mass basis only.
  • What is the ideal gas law in terms of density?
  • Write the balanced reaction for burning a general $C_xH_y$ hydrocarbon in air to products of complete combustion (PCC).
  • Write the same reaction for rich combustion in terms of equivalence ratio.
  • Write the same reaction for lean combustion in terms of excess air.
  • What is the criteria for there to be no change in moles during reaction to PCC?
  • Derive the equivalence ratio in terms of mixture fraction.