Hydrogen cyanide may be produced from methane, ammonia and oxygen by the Andrussov process: NH3(g) + CH. (g) + 1.50₂ (g) → HCN (g) + 3H₂O(g) Consider the following process in which 1.20 kmol/min of a gas mixture containing 26.0 mol% NH3, 31.0 mol % CH4, and 43.0 mol % O₂ is fed to a reactor. The feed stream is at 100.0°C. In the reactor NH3, CH4, and O₂ are consumed to produce HCN and H₂O according to the above equation. a) If 1913 kW of heat is removed from the reactor and the exit gas temperature is 170.0°C, calculate the composition of the exit gas and the conversion of NH3. Given data: Standard heat of formation and specific heat capacities. Standard heat of formation (AA) NH, (9) CH₂ (g) HCN (g) H₂O (g) -45.90 kJ/mol -74.85 kJ/mol 135.14 kJ/mol -241.80 kJ/mol

A stream of liquid water at a rate of 8 lit/s with a stream of methanol and ethanol mixture (contains 25 mol% methanol) are fed to continues evaporator. Another stream of methanol at a molar flow rate of 1 that of the alcohol mixture stream is fed to the same unit. If the liquids are evaporated totally and the produced vapor stream contains (0.1*1) mol% of water at a pressure of 28 psi and 220 °F, calculate: 1- The flow rate and composition of all streams in a molar, mass, and volumetric basis 2- The average molecular mass of all streams The Specific gravity of methanol is 0.762 and that of ethanol is 0.789 while the density of vapors can be estimated as: p=p*Mw/R*T where R-0.082 atm.m'kmol.K.

Use the information about three gases, with the properties below to answer the following questions. Nitrogen (N2) Oxygen (02) Argon (Ar) 93.0 °C 83.0 °C 73.0 °C M (kg/kmol) 28 32 40 Use the van der Waals equation of state and mixing rules to calculate the temperature where 100 kmol of a mixture of argon (10 mol%), nitrogen (45 mol%) and oxygen (45 mol %) would occupy 46.27 m³, at a pressure of 6.28 MPa. It is known that the van der Waals constant for nitrogen are a=1.370 atm(m³/kmol)² and b=0.0387 m³/kmol, and for oxygen are a=1.382 atm(m³/kmol)² and b=0.03186 m³/kmol. 63.0 °C Tc (K) 126.2 154.6 150.8 Pc (atm) 33.5 49.8 48 @ 0.04 0.021 -0.004

2. The vapor pressure of tetrachloromethane (tcm) and trichloroethylene (tce) can be expressed as the following functions of T (°C) in the range between the boiling point of pure tem (76.7°C) and tce (87.2°C): 2790.78 In(Picm/torr) × 15.8401 T + 226.4 2345.4 In(Pice/torr) 15.0124 – T + 192.7 Use the information to answer the following questions about a tcm+tce mixture. a. Make a graph of T vs. Xtce and Yice (similar to Figure 24.5) and use this graph to calculate the answers to questions b-d. (Hint: see Example 24-5 on page 975 and lecture slides) b. What is the normal boiling point of the mix when the mole fraction of tce is 0.6 (xtce = 0.6)? c. At the boiling point calculated in (b), what are the mole fractions of tcm and tce (Ytcm and ytce) in the vapor? d. What is the normal boiling point of the condensate of the vapor in (c)?