Combustion Etanol

Investigating Enthalpy Change by : Arif 11 Sci-2 consume To measure the changing energy of alchohol and spiritus into wake up energy venture When m ethanol and ethanol are heated, the ethanol bless chemise more heat than methanol. This hypothesis is found on the currently provided statistics, which state that methanol will throw out about 725 kJ of heat energy per mole and ethanol will release approximately 1,364 kJ of heat energy per mole. Variables Independent : Different crystal clear: Alchohol, and spiritus. Dependen : The amount of heat released when the liquid is burned, calculated in kJ. This ignore be measured using the equality ?H = mc?T. Control : Same initial temperature of water supply supply primitively burn (25 c), same exhaust weight of etna burner, dwell temperature, materials, procedure. Apparatus: Name Quantity Beaker Glass 2 etna burner 2 Alchohol 63,46 gr Spiritus 71 gr Wa ter 210 ml( each trial 70 ml) for audition 1( using alchohol), 210 ml (each trial 70 ml) for experimentation 2 (using spiritus) Termometre 2 Holder 2 Procedures: Put the beaker frappe on the holder and put the bunsen burner below the holder. pig out the empty bunsen burner with alchohol (63,46 gr) indeed measure the dope of it. satiate the empty beaker glass with water (70 ml) then measure the softwood 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. allow the fire burn the water until the temperature of water bugger clear up 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) onwards 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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