2. Ammonia reacts with oxygen to form nitric oxide and water: 4NH3 +502 →→ 4NO + 6H₂O The fresh feed stream contains ammonia and oxygen, with the oxygen in 80.0% excess. The molar flow rate of the ammonia in the fresh feed stream is 200. mol/min. The conversion of the ammonia in the reactor is 65.0%. (a) Determine the number of degrees of freedom. Show your work. (b) Determine the molar flowrates of nitric oxide, oxygen, and water exiting the reactor. (c) To reduce the loss of the unreacted ammonia, the exit stream from the reactor is sent to a separation unit. Two streams leave the unit. One exit stream contains all of the ammonia and is recycled and combined with the fresh feed. The second exit (product) stream contains all of the nitric oxide, oxygen, and water. Draw the flowchart and label carefully. What is the overall conversion of the ammonia for this process? Is there sufficient oxygen in the fresh feed? Explain. What is the composition (mole fractions) of the nitric oxide, oxygen, and water in the product stream?

Problem 2. There has been a lot of recent interest in oxygen-enhanced combustion. In this process, pure oxygen is added to air which is then fed to a furnace along with the fuel. This increases the combustion temperature, thereby reducing the amount of pollutants and increasing the concentration of CO₂ in the flue gas, making it easier to sequester the CO₂. An Orsat analysis of the flue gas from a furnace which burns methane is as follows: 11.1 mol % CO2, 5.5 mol % O2, and 83.4 mol % N₂ (dry basis). The amounts of CO, SO₂, and CH4 in the flue gas are negligible. a.) How many moles of air were fed to the furnace per mole of pure O₂? b.) What was the percent excess oxygen fed to the furnace?

For the electrolysis of CuCl2 (molten) to form Cu(s) and Cl2(g):E°Cu2+/Cu = 0.339 VE°Cl-/Cl2 = 1.360 V What minimum voltage must be used to carry out the reaction? If 1.5V is used, how much electrical energy (in kJ) will be used to produce 2g of  Cl2(s)?

Fresh methanol (CH3OH) reactant is combined with recycled reactant and vaporized before being sent to a fixed-bed reactor. The reactor effluent is then cooled before being sent to the first of two distillation columns. DME (CH3)2O product is taken overhead from the first column. The second column separates the water from the unused methanol. The methanol is recycled back to the front end of the process, and the water is sent to wastewater treatment to remove trace amounts of organic compounds. Draw a block flow diagram for this process. The main reaction is 2CH3OH → (CH3)2O + H2O

Aniline is produced by the hydrogenation of nitrobenzene. A small amount of cyclohexylamine is produced as a by-product. Nitrobenzene is fed to the reactor as a vapor with three times the required stoichiometric amount of hydrogen. The conversion of nitrobenzene to the products is 96% and the selectivity to aniline is 85%. Unreacted hydrogen is separated from the reaction products and recycled to the reactor. From the recycle line it is purged to keep the inerts in the recycle stream below 5%. The fresh hydrogen that is fed is 99.5% pure and the rest is inert. Calculate the adiabatic outlet temperature of the reaction products and indicate the relationship with respect to the reference temperature (298.15) (in K):

Material and energy balance

A mixture of 90g of N2, 165g of O2 and 45g of Cl2 is introduced to a reactor where the following chemical reaction is carried out in the gas phase, If the reaction has a yield of 85% yield. Calculate the products of the reaction at the outlet. N2+O2→N2O4

Professor Modyn's steady state flow reactor is now fed acetylene (C₂H₂) at 2.000 mol/s. The acetylene is combusted with 45.00% excess dry air to form CO2 and H2O. Limitations within the reactor only allow 82.00% of the acetylene to react. Both the acetylene and air enter the reactor at 25 °C, and the products leave the reactor at 1027.00 °C. Potentially useful properties are listed in the following table. Species Ahr(298 K), kJ/mol Cp, kJ/kmol-K 02 0 3.5R N₂ 0 3.5R C₂H₂ -226.73 4R CO2 H₂O(g) -393.5 4R -241.82 5R Determine the exiting flow rate of 02. 5.945 exiting flow rate: Determine the heat interaction term. -2085.37 mol/s heat interaction term: kW