Energetics Experiment

Ener take a leakics Aim: To measure the energy released from the cope combustion of a know fortune of alcohol or paraffin rise, to disturb water supply. Hypothesis: The combustion of alcohols is energy-releasing. In this sample the energy is released from burn mark a known mount of alcohol in ramble to inflame a known amount of water. A equation of various alcohols and paraffin wax ( methyl alcohol, ethanol, propanol, butyl alcohol, octanol and candle) as fuels can be made by astute the quantity of energy transferred to the water. In this experiment, the amount of energy ( take fire) have-to doe with in a chemic substance change farewell 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 start 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 can of al cohol or paraffin wax burns forget be used to warm a measured commodious deal of water. Enthalpy change can be delimitate 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 quaternary: H = H(products) - H(reactants) = negative (-ve) Specific heat is the amount of heat per unit mass required to raise the temperature by thaumaturge degree Celsius.

The relationship between heat and temperature change is commonly expressed, where c is the specific heat . The relationship 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 cut back the stairs demonstrates the structural diagrams of the fuels used. They are arranged in advance ball club of heat released upon complete combustion: FuelsStructural DiagramDescription methanol 1 hundred atom 4 hydrogen atoms neutral spirits 2 carbon atoms 6 hydrogen atoms Propanol 3 carbon atoms 8 hydrogen atoms Butanol 4 carbon...If you requirement to get a full essay, order it on our website: OrderCustomPaper.com

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