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

EXPERIMENT AIM: To determine the experimental heat of burning at the stake 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 takings Stand Methanol 1 Box of Matches Water 1 electronic Balance Thermometer PROCEDURE: Firstly, footfall the weight of the exonerate 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 up to the retort stand. Fourthly, beak the weight of the spirit burner containing known nitty-gritty of Methanol (CH3OH). Fifthly, Measure the initial temperature of the water with the thermometer. Then blithe the spirit lamps candle and place it under the copper container. Sixth ly, splatter the 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, resound steps 1 by means of to 7 for ethanol (CH3CH2OH).

The combustion of Methanol and Ethanol can be represented with: 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 5 994 5994-4731= -1263 KJ/mole credit line: ! combustion values are not exact to the moderate ascribable to different values of bond energies. Risk estimate Methanol: inhalation and ingestion whitethorn be fatal. Inhalation also starts low blood pressure, headache, nausea, vomiting, dizziness, narcosis, aboriginal nervous agreement depression and suffocation. May irritate beat and eyes and temporarily damage corneas. wasting disease 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 vow it on our website: OrderCustomPaper.com

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