Question 1 (20) Assume ideal gas properties, consider a 500 mL cylinder that contains a mixture of heptane and air at 350K, and I atm. The oxygen is at 10% excess. 1. How many moles of oxygen, nitrogen and heptane are in the cylinder? 2. The gases are compressed adiabatically to a pressure of 11 atm. Use for all the gases. What is the volume and temperature ? 3. The heptane is completely oxidized, find the composition of the products in moles (i.e. carbon dioxide, steam, oxygen and nitrogen) 4. The heat of combustion of heptane is. Use the specific heat capacities from the Table, calculate the rise in temperature from Nitrogen Sicam Osypen Carbon dioxide Op Imole K) 29.12 36 944 37.35 Heat released - The summation is over all the species in the table is the rise in temperature due the combustion and is the moles of heptane in the cylinder. 5. After the combustion reaction, the gases are at a temperature and a volume of what is the pressure? (Remember to use the total moles after combustion in the calculation.) Question 2 (20) Toluene is synthesized from benzene and methanol in a reactor at a rate of 150 mole/min. The conversion is 80%. The two reactants are fed in stoichiometric ratio into the reactor at a pressure of 4 atm. and an inlet temperature of 400K. The van der Waals equation is used for each one of the reactants. The critical pressures and temperatures are listed below. Methanol: Benzene: 1. Calculate the a and b parameters for benzene and methanol, 2. Find the relationship between the specific density of benzene and methanol. 3. Write the partial pressure of benzene in terms of its specific volume and temperature. Do the same for methanol. Add the two pressures and solve for the specific volumes. 4. Calculate the total volumetric flow rate into the reactor. 10