To detemine the heat of combustion of ethanol and methanol. Procedures and conclusion.

EXPERIMENT AIM: To determine the experimental heat of burn of m fermentation alcohol (CH3OH) and ethanol (CH3CH2OH). To decide which would be a better choice to stupefy on a camping trip. MATERIALS: 1 Copper container 1 Clamp 1 Spirit Lamp with Wick neutral spirits 1 regress Stand Methanol 1 Box of Matches Water 1 electronic Balance Thermometer PROCEDURE: Firstly, footfall the weight of the renounce Copper container on the electronic balance. Record your results in a table. Secondly, fill the bull container with 100ml of water. Thirdly, Attach the copper container to the clamp which is them given to the retort stand. Fourthly, beak the weight of the spirit burner containing known come of Methanol (CH3OH). Fifthly, Measure the initial temperature of the water with the thermometer. Then straighten out the spirit lamps candle and place it under the copper container. Sixthly, take to task t he water use the thermometer and constantly check the temperature. Once the temperature is 10oC greater than the initial temperature, express the spirit burner. Seventhly, reweigh the mass of the spirit burner. Eighthly, resort steps 1 finished to 7 for ethanol (CH3CH2OH).

The combustion of Methanol and Ethanol can be represented by: Methanol: 2CH3OH(l) + 3O2(g) 2CO2(g) + 4H2O(l) 2(358+463+(414x3)) + (498x3) (804x2x2) + (463x2x4) 5620 6920 6920-5620= 1300 1300/2= -650 KJ/mole Ethanol: CH3CH2OH(l) + 3O2(g) 3H2O(l) + 2CO2(g) 346+358+463+ (414x5) + (498x3) (804x2x2) + (463x2x3) 4731 5994 5994-4731= -1263 KJ/mole differentiate: combustion values a! re not exact to the earmark ascribable to different values of bond energies. Risk judgment Methanol: stirring and ingestion whitethorn be fatal. Inhalation also starts low blood pressure, headache, nausea, vomiting, dizziness, narcosis, aboriginal nervous dodge depression and suffocation. May irritate beat and eyes and temporarily damage corneas. use may cause blindness, vomiting, headaches and dizziness. Ethanol: Ingestion may be fatal. May be mantled through the skin. If you want to get a full essay, purchase sight it on our website: OrderCustomPaper.com

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