TLC of Known Compounds Complete the table below (include calculations, use additional page as necessary) Compound Experimental Rf Aspirin Ibuprofen Acetaminophen Caffeine 0.60 0.58 0.625 0.375 Unknown ID A Experimental Rf 0.625 RF distance traveled by solute Aspirin = 3.0 =0.60 5.0 TLC of Unknown Compounds Caffeine = 1.5 4.0 = 0.375 2. 15pts Complete the table below (include calculations, use additional page as necessary). = 0.625 distance traveled by solven + Ibu. = 2.9 = 0,58 50 unk. 9 Acetaminophen = 2.5 = 0.625 4.0 2,5 4.0 3. 5pts What is the identity of your unknown? Briefly describe all of the data you have to support your identification. of The identity unknown was acetaminophen. I know this was my unknown because in my my picture of The second TLC plate, the spot where letter "C" (acelaminophen was even with the spot of my unknown. A. 4. 20 Do the experimental Rf values match the predicted rate of elution based on the chemical/structural properties of each molecule? Why or Why not? Include structures and describe any deviations. For each molecule the rf values I calculated were very close to the literature values. Thin Layer Chromatography: Identification of Organic Compounds Pre Lab Reagent Table UDichloromethane A Aspirin BIbuprofen Acetaminophen D Caffeine MW MP BP 84.939/1 39.6C -97C 180.1989 140C 135C 206.299 157C 15-17C 169C 161.1439 420C 194, 189 173C ~235C Literature Rf 0.88 0.155 0.56 0.31 MSDS Limitany toxic TOXIC irritant Structure CH 012 C9H304 C13H180 Cs Ha Noi |CSHIONYO BIOMASS BOILER OPERATION ANALYSIS A fuel silo stores the biomass waste fuel and is fed into the boiler using a conveyor system. Combustion air is preheated before entering the boiler using an air preheater system that regenerates waste heat from the boiler flue gas. Due to the high temperature difference between the flue gas and ambient, the air preheater operates under non-adiabatic where a 10% heat loss is expected from its adiabatic heat transfer rate from the gas to the combustion air. QUESTION 1 [CO1] Select a suitable biomass waste fuel and obtain its volumetric composition from available literature sources. QUESTION 2 [CO2] The flue gas acts as a heating source for the combustion air. The flue gas inlet temperature and flow rate into the air preheater are constant at 250C and 100 litres/min, while the air inlet temperature and flow rate into the air preheater are constant at 30C and 40 litres/min. 2.1) Obtain from literature sources the flue gas density from the combustion process of the selected biomass fuel. 2.2) Based on the sensible heating analysis of air, plot the flue gas exit (exhaust) temperature when the preheated combustion air exits the preheater between 40C and 70C. 2.3) Then, calculate the maximum waste heat recovery percentage from the flue gas for this air preheating process, based on Eq. (1). Waste heat recovery ratio, EWHR Qgas-air Qgas (1) QUESTION 3 [CO3] If the supplied excess air is fixed at 130%, plot the combustion heat transfer rate (Qc) profile from the combustion of the selected biomass fuel as the combustion air temperature changes from 40C and 70C.