1. For steady flow through a heat exchanger at approximately atmospheric pressure, what is the final temperature, when heat in the amount of 800 kJ is added to 10 mol of ethylene initially at 200? (20%)
2. Hydrocarbon fuels can be produced from methanol be reactions such as the following, which yields 1-hexene:
6CH3OH(g) C6H12(g) + 6H2O(g)
Compare the standard heat of combustion at 25ofCH3OH(g) with the standard heat of combustion at 25of C6H12(g) for reaction products CO2(g) and H2O(g).
3. Natural gases are rarely pure methane: they usually also contain other light hydrocarbons and nitrogen. Determine an expression for the standard heat of combustion as a function of composition for a natural gas containing methane, ethane, propane, and nitrogen with the composition of:
4. Chlorine is produced by the reaction: 4HCl(g) + O2(g) 2H2O(g) + 2Cl2(g). The feed stream to the reactor consists of 62 mol % HCl, 34% mol O2
and 4 mol % N2, and it enters the reactor at 500. If the conversion of HCl is 75% and if the process is isothermal, how much heat must be transferred from the reactor per mole of the entering gas mixture?