Heat combustion of Alcohol Essay Example for Free

Heat burning of Alcohol EssayBackground InformationAlcohols are used as a bloodline of fuel in many countries. For it to turn into fuel, intoxicant must be burnt. Alcohol is also a good clean source of energy and heat. In this sample I will be trying to find out the amount of energy produced when different alcohols are burned.In this experiment, the emblem of alcohol will be tested is Ethanol. Ethanol is a colourless liquid and is sometimes referred simply as alcohol or disembodied spirits. Carbon durance with a hydroxide molecule at the end of the chain make up an alcohol. Ethanol is a straight-chain alcohol and its molecular radiation diagram is C2H5OH. Its empirical formula however is C2H6OThe heat of combustion of any substance is the amount of heat energy given out when 1 mole of that substance burns only in air. Every covalent bond existing in the molecule has a bond energy. This bond energy is the amount of energy needed to check up on the bond or the amount of energy given out as a bond is formed.Concentration of an alcohol is related to the number of moles per decimetre cubed of the substance. The more than concentrated the substance the more the substance will burn thus more heat energy is given out.Research QuestionWill increase the concentration of neutral spirits affect the heat of combustion of the alcohol?HypothesisIt is hypothesised that increasing the concentration of ethanol will increase the heat of combustion of the alcohol.Variables main(a)The concentration of ethanol (Molar)* 0.5 Molar ethanol* 1.0 Molar ethanol* 1.5 Molar ethanol* 2.0 Molar ethanol* 2.5 Molar ethanolDependent* Heat combustion of the alcohol (C)ControlledWhat will be controlledHow it will be controlledMethod of taking the temporaryerature of weeweeThe thermometer will be fixed in the middle of the conical flaskful and the tip of the thermometer will be touching the bottom of the flask.The conditions of the surrounding areaThe experiment will be carried out in standard lab conditions. rid of contamination and residue to the next experiment when using the thermometerDistilled water will be used to thoroughly clean out the equipments before experiment. Equipments will non be reused for the next experiments.MethodDrawing up data tablesMolar of EthanolTrialsinitial temp(C)Final temp(C)Temp change(C)Initial mass(g)Final mass(g)Mass used(g)Qualitative DataGetting apparatus ready1. Set up the electronic graduated table and join on the metal clamp to the retort stand2. Using the label stickers and permanent pen, label the beakers that contain the different molar concentration of ethanol accordingly 0.5 1.0 1.5 2.0 2.53. evaluate the beaker containing water4. Using the distilled water, thoroughly clean out the conical flasks and measuring cylindersCarrying out experiment1. During the experiment, record any smell or colour of alcohol and any observation in the Qualitative Data table2. Fill the conical flask with 100mL of water.3. Place the thermometer inside the conical flask and record the initial temperature of the water4. Keep the thermometer inside the conical flask5. Clamp the flask at a height approximately 2cm from where the spirit burner will be placed below6. Fill the spirit burner with just enough 0.5 Molar of ethanol so that the wick is half soaked in alcohol7. Weigh the spirit burner attached with the lid containing the alcohol and record the initial mass8. Place the spirit burner under the conical flask and use the matched to light the wick9. When the water temperature reaches approximately 40C, blow out and extinguish the flame10. Record the exact temperature reached when flames were extinguished11. Using the tongs, move the spirit burner and lid to the electronic scale and weigh the final mass12. Dispose the water and alcohol inside the spirit burner13. Repeat steps 1 11, but change the type of ethanol in respect to independent variables 1.0 Molar, 1.5 Molar, 2.0 Molar and 2.5 Molar of ethanol14. When repeating steps 1 11, make sure a new conical flask and water is used and also a new spirit burner is used15. When all five experiments of the different molar concentration of ethanol is completed, repeat the experiment another two times for each molar concentration of ethanol in reference to the data tableCalculations1. Final temp Initial temp = Temp change (C)2. Final mass Initial mass = Mass used (g)