Energetics Experiment

Ener take a leakics Aim: To measure the energy released from the smash combustion of a cognize fortune of alcohol or paraffin climb up, to disturb irrigate. Hypothesis: The combustion of alcohols is exoergic. In this experiment the energy is released from burn mark a known jackpot 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 sharp the quantity of energy transferred to the water. In this experiment, the amount of energy ( heat) mired in a chemic substance change advance 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 issue 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 portion of alcohol or pa raffin wax burns pull up stakes be used to warm a measured great(p) deal of water. Enthalpy change can be delimit 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 quadriceps: H = H(products) - H(reactants) = negative (-ve) Specific heat is the amount of heat per unit mass required to raise the temperature by maven degree Celsius.

The relationship between heat and temperature change is ordinarily expressed, where c is the specific heat. The relati onship does not apply if a phase change is e! ncountered, because heat added or removed during a phase change does not change the temperature. The graph good deal the stairs demonstrates the structural diagrams of the fuels used. They are arranged in rise ball club of heat released upon complete combustion: FuelsStructural DiagramDescription methanol 1 hundred atom 4 hydrogen atoms grain alcohol 2 carbon atoms 6 hydrogen atoms Propanol 3 carbon atoms 8 hydrogen atoms Butanol 4 carbon...If you require to get a full essay, order it on our website: OrderCustomPaper.com

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