Energy output of Bioethanol and Industrial Ethanol Essay

AimThe aim of this investigation is to determine which of the two derivatives of ethanol releases more energy, Bioethanol or industrial Ethanol.HypothesisThe main compound in both alcohols has the similar chemical formulae C2H5OH, and the other compounds be secret therefore the Energy issue cannot be calculated exactly by using standard wedge enthalpies. However, as the main compound is known and the same for both ethanols the energy output should be very similar. Therefore the difference in energy output only depends on the compounds which are blended to the alcohols. machine Thermometer Metal can x2 Draught shield x4 Gloves Safety spectacles Heat-resistant mat insulation card 100cm3 measuring cylinder x2 Spirit burner Clamp stand Balance MatchesSubstances E100 Bioethanol Industrial Ethanol wetMethodThe idea to do the experiment the way described is due to knowledge from past experiments and the IB textbook. borrow these steps 10 times, five times for each alcohol. tone 1 Mea sure 50cm3 of alcohol in a measuring cylinder amount 2 Weigh and record the empty liven burner gradation 3 Fill the 50cm3 of alcohol in the spirit burnerStep 4 Weigh and record the make full spirit burnerStep 5 Measure 100cm3 of piddle in a measuring cylinderStep 6 Fill the water into the metal canStep 7 Set up the Apparatus as displayed (1 draught shield in each direction, south, north, west and east, forming a box around the appliance assure there are 2cm of space between the bottom of the metal can and the cotton wick)Step 7 Record the initial temperature of waterStep 8 Light the cotton wick of the spirit burnerStep 9 Record the temperature every 15 seconds until the cotton wick loses its flameStep 10 Weigh the spirit burner with the remaining alcohol to calculate how many grams of alcohol have been usedVarables Temperature Temperature of Water will be measured before every experiment. The whole experiment takes place at style temperature. Volume of Water 100cm3 Mass of alco hol 50cm3 filled in spirit burner. The mass will be measured before and after the experiment to figure how much has been used. Time record every 15 seconds Concentration of alcohol 1M Surface area of metal can which flame is heating up same cans will be used and positioned at same place above the cotton wick to stay this constant. Length of cotton wick 0.5cm Distance from cotton wick to bottom of metal can 2cm lot Warnings Industrial Ethanol Highly flammable. Therefore wear upon gloves and safety spectacles Bioethanol Highly flammable. Therefore wear gloves and safety spectaclesChemistry HL Plan of Investigation