• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Comparing the enthalpy changes of combustion of different alcohol's and fuels.

Extracts from this document...

Introduction

Comparing the Enthalpy Changes of Combustion of Different Alcohol's and fuels Plan Introduction In this experiment I will attempt to find out the energy needed to raise the temperature of 1g of water by 1oC using different fuels and alcohol's. This will enable us to determine the change in enthalpy for the different substances. Method * Firstly I will measure 200cm3 of water out into a copper coulometer * Then I will half fill a spirit burner with the required fuel, the burner must have a lid to stop ...read more.

Middle

recorded and the wick of the burner ignited * After securing the draft excluder with heat proof gloves and leaving a small gap at the bottom for air to get in I will stir the water to insure that the temperature rise is equal throughout the 200cm3 of water. * Just before a suitable temperature rise e.g. 20oc the flame will be extinguished with the burner cap to immediately stop the consumption of fuel. ...read more.

Conclusion

The large bottles containing the fuel for distribution will be kept as far away from the experiment as possible preferably in a fume cupboard preventing fumes from being ignited. Fair Test To make certain that the results are fair I will always use fresh cool water and leave time for the copper coulometer to cool to room temperature, try to keep wick lengths and distance between burner and coulometer regular. Will keep size and placement of the draft excluder the same throughout the experiment and keep all relevant apparatus the same. Results Hexane Using the data book I will calculated the expected Craig Davis 08/05/07 Fuels Investigation 1/2 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Organic Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Organic Chemistry essays

  1. Peer reviewed

    Burning Fuels Coursework

    4 star(s)

    Analysis My prediction was that Butan-1-ol' would provide the best value for money. This was because of its relatively low price when compared to the other fuels. Buntan-1-ol is the fourth largest molecule - and as such it provides more energy (27.10 KJ/g)

  2. Comparing the Enthalpy Changes of Combustion of Different Alcohols

    The alcohols that I am using in my experiment are: -Methanol CH3 -OH -Ethanol CH3 -CH2 -OH -Propan-1-ol CH3 -CH2 -CH2 -OH -Propan-2-ol CH3 -CH2 (-OH)-CH2 -Butan-1-ol CH3 -CH2 -CH2 -CH2 -OH When an alcohol contains more than two carbon atoms, as is often the case, isomeric alcohols are possible (same number of molecules but different structure).

  1. Comparing the enthalpy changes of combustion of different alcohols.

    on the side of the cylinder and this is why no liquids can accurately be measured. Risk assessment. When working with alcohols there are precautions that need to be taken. Methanol * Highly toxic when ingested, inhaled or absorbed by the skin * If inhaled, it produces a narcotic effect

  2. Investigate the enthalpy change of different alcohol

    Vaporization of some alcohol would give us a wrong weight result. 5. All equipments are washed with distill water and dried completely before the experiment. These prevent contamination with unwanted ions that have left over on the equipments before. 6.

  1. The Energy Content Of Different Fuels

    + (8 x 347) + (2 x 360) + (2 x 463) + (15 x 498) = 9086 + 2776 + 720 + 926 + 7470 = 20978 kjmol-1 On the right-hand side of the equation: 10 x ?2 x C=O (-743 kjmol-1) 12 x ?2 x O-H (-463 kjmol-1)

  2. This is a mini-project on fuel - topics include petrol and fossil fuels.

    However, nuclear fission is extremely difficult to achieve. Hydrogen atoms must be squeezed by a magnetic field and held at a temperature higher than that in the sun's centre for fusion to occur. Nuclear Fission Nuclear power stations produce energy from the fission of atoms of uranium metal.

  1. Energy Transfer in Fuels

    Also by recording the results in a table, it would be easier to read off the results and produce a graph in the analysing part of the coursework. I think my plan will be a safe one as we are using the necessary equipment to make it safe, for instance we are using a burn proof mat and safety goggles.

  2. Comparing the enthalpy changes of different alcohols

    4.2 x 100 joules of heat 100g of water heated through 22�C needs 4.2 x 100 x 22 joules of heat. 200g of water heated through 22�C needs 4.2 x 200 x 22 joules of heat. =18.48 KJ The 18.48 KJ must have come from the combustion of Hexane.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work