Combustion Etanol

Investigating Enthalpy Change by : Arif 11 Sci-2 show To measure the changing energy of alchohol and spiritus into rouse energy surmise When m ethanol and ethanol are heated, the ethanol coordinate chemise more heat than methanol. This hypothesis is found on the currently provided statistics, which state that methanol will forgo somewhat 725 kJ of heat energy per mole and ethanol will release approximately 1,364 kJ of heat energy per mole. Variables Independent : Different unruffled: Alchohol, and spiritus. Dependen : The amount of heat released when the liquid is burned, calculated in kJ. This nooky be measured using the equality ?H = mc?T. Control : Same initial temperature of pissing supply earlier burn (25 c), same exhaust weight of etna burner, way temperature, materials, procedure. Apparatus: Name Quantity Beaker Glass 2 bunsen burner burner 2 Alchohol 63,46 gr Spiritus 71 gr Water 21 0 ml( each trial 70 ml) for audition 1( using alchohol), 210 ml (each trial 70 ml) for investigate 2 (using spiritus) Termometre 2 Holder 2 Procedures: Put the beaker glass on the holder and put the bunsen burner below the holder. filling the empty bunsen burner with alchohol (63,46 gr) indeed measure the vision of it. take aim the empty beaker glass with water (70 ml) then measure the concourse 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. permit the fire burn the water until the temperature of water bugger bump 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) onward burned - (bunsen burner mass + alchohol mass) after burn ed. Calculate how many heat kilojoule fr! eed... If you want to get a full essay, order it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay