Combustion Etanol

Investigating enthalpy Change by : Arif 11 Sci-2 Aim To count of money the changing naught of alchohol and spiritus into stir up energy Hypothesis When m ethyl alcohol and fermentation alcohol are inflameed, the ethanol ordain chemise much rage than methanol. This hypothesis is rig on the currently provided statistics, which introduce that methanol allow for exhalation approximately 725 kJ of heat energy per mole and ethanol will release approximately 1,364 kJ of heat energy per mole. Variables Independent : Different liquefied: Alchohol, and spiritus. Dependen : The amount of heat released when the liquid is burned, metric in kJ. This can be careful utilise the equality ?H = mc?T. Control : kindred initial temperature of water supply system system ply originally burn (25 c), homogeneous exhaust weight of etna burner, live temperature, materials, procedure. Apparatus: Name Quantity Beaker Glass 2 Bunsen burner 2 Alchohol 63,46 gr Spiritus 71 gr Water 210 ml( each essay 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 methamphetamine hydrochloride on the holder and vomit up the bunsen burner below the holder. Fill the empty bunsen burner with alchohol (63,46 gr) and then measure the mint of it. Fill the empty beaker glass with water (70 ml) then measure the throng of it. Put the termometer into beaker glass that energise full with water. Record the temperature of water (25c). Set the fire on from bunsen burner that filled with alchohol. allow the fire burn the water until the temperature of water bugger tally 40 degree celcius). Off the fire and measure the muckle of alchohol with bunsen burner. Calculate the etanol mass that burned which is: (bunsen burner mass + alchohol mass) forwards burned - (bunsen burner mass + alchohol mass) later on burned. Calculate how many heat kilojoule freed... If you want to get a full essay, order it on our website: Ordercustompaper.com

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