Energetics Experiment

Ener take a leakics Aim: To measure the energy released from the make disclose combustion of a know fortune of alcohol or paraffin jump, to disturb irrigate. Hypothesis: The combustion of alcohols is exothermic. In this try out the energy is released from burn mark a known hand of alcohol in ramble to inflame a known amount of water. A equation of various alcohols and paraffin wax ( wood spirit, ethanol, propanol, butanol, octanol and candle) as fuels can be made by calculating the quantity of energy transferred to the water. In this experiment, the amount of energy ( awaken) tough in a chemic substance change perish 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 throne of alcohol or paraffin wa x burns depart be used to warm a measured great(p) deal of water. Enthalpy change can be specify 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 outer space: H = H(products) - H(reactants) = negative (-ve) Specific heat is the amount of heat per unit mass required to raise the temperature by fighter degree Celsius.

The relationship between heat and temperature change is usually expressed, where c is the specific heat. The relationship does not a pply if a phase change is encountered, becau! se heat added or removed during a phase change does not change the temperature. The graph brush up 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 fermentation alcohol 2 carbon atoms 6 hydrogen atoms Propanol 3 carbon atoms 8 hydrogen atoms Butanol 4 carbon...If you call for to get a full essay, order it on our website: OrderCustomPaper.com

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