Combustion Etanol

Investigating Enthalpy Change by : Arif 11 Sci-2 submit To measure the changing energy of alchohol and spiritus into horniness energy guessing When m ethanol and ethanol are heated, the ethanol sanctify chemise more heat than methanol. This hypothesis is found on the currently provided statistics, which state that methanol will uncover about 725 kJ of heat energy per mole and ethanol will release approximately 1,364 kJ of heat energy per mole. Variables Independent : Different semiliquid: Alchohol, and spiritus. Dependen : The amount of heat released when the liquid is burned, calculated in kJ. This go score be measured using the equality ?H = mc?T. Control : Same initial temperature of piddle supply in the lead burn (25 c), same exhaust weight of etna burner, means temperature, materials, procedure. Apparatus: Name Quantity Beaker Glass 2 etna burner 2 Alchohol 63,46 gr Spiritus 71 gr Wate r 210 ml( each trial 70 ml) for audition 1( using alchohol), 210 ml (each trial 70 ml) for experiment 2 (using spiritus) Termometre 2 Holder 2 Procedures: Put the beaker frosting on the holder and put the bunsen burner below the holder. carry the empty bunsen burner with alchohol (63,46 gr) indeed measure the fortune of it. pig out the empty beaker glass with water (70 ml) then measure the smoke of it. Put the termometer into beaker glass that make full with water. Record the temperature of water (25c). Set the fire on from bunsen burner that filled with alchohol. let the fire burn the water until the temperature of water bugger off 40 degree celcius). Off the fire and measure the mass of alchohol with bunsen burner. Calculate the etanol mass that burned which is: (bunsen burner mass + alchohol mass) before burned - (bunsen burner mass + alchohol mass) after burned. Calculate how many heat kilojoule freed... ! If you want to get a full essay, order it on our website: BestEssayCheap.com

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