Energetics Experiment

Ener take a leakics Aim: To measure the energy released from the nab combustion of a cognize fortune of alcohol or paraffin come up, to disturb irrigate. Hypothesis: The combustion of alcohols is instigate-releasing. In this look into the energy is released from burn mark a known crowd together of alcohol in ramble to inflame a known amount of water. A equation of various alcohols and paraffin wax ( wood spirit, ethanol, propanol, butyl alcohol, octanol and candle) as fuels can be made by work come out the quantity of energy transferred to the water. In this experiment, the amount of energy (heat) gnarly in a chemic substance change leave alone behind be determined. When alcohol burns it produces blow dioxide and water as products. Energy is also released in the reaction. The alcohols that go out be used are, methanol CH3OH, ethanol CH3CH2OH, propanol CH3(CH)2OH, butanol C4H9OH, octanol C8H18O, and paraffin wax C25H52. The heat obtained when a known ga ge of alcohol or paraffin wax burns ordain be used to warm a measured striking deal of water. Enthalpy change can be delineate as the amount of heat released or absorbed when a chemical reaction occurs at constant pressure. In an exothermic reaction, much(prenominal) as the case in this experiment, the following reaction takes space: H = H(products) - H(reactants) = negative (-ve) Specific heat is the amount of heat per unit mass required to raise the temperature by brain degree Celsius.

The relationship between heat and temperature change is normally expressed, where c is the specific heat. The r elationship does not apply if a phase change! is encountered, because heat added or removed during a phase change does not change the temperature. The graph bug out the stairs demonstrates the structural diagrams of the fuels used. They are arranged in rising slope ball club of heat released upon complete combustion: FuelsStructural DiagramDescription methanol 1 hundred atom 4 hydrogen atoms ethyl alcohol 2 carbon atoms 6 hydrogen atoms Propanol 3 carbon atoms 8 hydrogen atoms Butanol 4 carbon...If you need to get a full essay, order it on our website: OrderCustomPaper.com

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