• 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. The Energy Content Of Different Fuels

    This will be in ?C. * Calculate the mass of fuel used. By weighing the fuel at the beginning and at the end of the experiment and subtracting the beginning one from the end to find the difference. I will measure this in grams. I will weigh the fuel while it is in the burner

  2. To Investigate the Combustion of Fuels

    4 253.59 252.41 1.18 19 30 11 4620 3915.25 Average - - - - - - - 3636.07 Propanol: Reading Mass of Spirit Burner (g) Fuel Used (g) Temperature (oC) Temperature rise (oC) Total Energy Released (J) Energy Released per Gram burnt (J g-1)

  1. Hydrocarbons As Fuels.

    -Disadvantages: methanol is more toxic than ethanol; it provides much less energy per litre than petrol; mixtures of methanol and petrol absorb water and car engines may corrode; methanol and petrol tend to separate into layers; combustion of methanol produces the carcinogenic aldehyde methanal when there is insufficient air.

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

    Another measure of accuracy is how well I can read the equipment that I am using. For example it will be easy to accurately read the reading on the digital balance but it will be harder to accurately read the temperature on a thermometer or the amount of liquid in a measuring cylinder.

  1. Comparing the Enthalpy Changes of Combustion of Different Alcohols

    We can do this with the by using the equation: ?Hc= (m ? c ? ?t) ? moles In this equation 'm' is equal to the 'mass' of water that is heated in the calorimeter, in my experiment it is 100 cm3 (100grams).

  2. Measuring the Enthalpy Change of Combustion of Different Fuels

    Leave the thermometer in the water until the temperature stops rising. Then when the temperature is stable, record the temperature. 14. Place the spirit burner on the balance with the cap and record the mass given in grams 15.

  1. Energy Transfer in Fuels

    Now we are to see how much energy has been transferred to the water by using the mass change. This is the final step of the formula. Fuel Working Out Answer (j/g/?C) Ethanol 100 ? 0.88 x 8400 954545 Butanol 100 ?

  2. GCSE Chemistry Revision Notes - everything!

    Negative ions are known as anions. Aluminium extraction Aluminium metal is always covered in a thin layer of aluminium oxide. This oxide layer can be made thicker to protect the metal from corrosion. The aluminium object is made the anode of an electrolytic cell.

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