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

To determine which alcohol makes the best fuel for burning.

Extracts from this document...

Introduction

Chemistry coursework: Burning Alcohols Aim: The aim of this investigation is to determine which alcohol makes the best fuel for burning. Equipment: Tripod Tin can Alcohols: Ethanol, Propanol, Brutanol, Pentanol, Hexanol, Heptanol, Octanol. Thermometer Stopwatch Heat proof mat Mass Balance Variables: Constant variables: * Type of container * Amount of water used * Surrounding temperature (approximate) * Height of beaker * Mass Balance (if possible) * Height of beaker from wick Changeable variables: * The type of alcohol used Safety: Safety goggles must be worn at all times during the experiment to protect the eyes. After the tin can has been heated, it must be handled with great care as it will be immensely hot, as it shall contain hot water. The other equipment that will have been heated may also be slightly hot. All equipment should be kept in the centre of the table to prevent spillage. ...read more.

Middle

Ach type of alcohol requires a certain amount of energy before all the bonds are broken. The more bonds there are in a chain length the more Hydrocarbons there will be. Hydrocarbons are the source of potential energy, which is converted into kinetic energy. Therefore if the alcohol contains more hydrocarbons more energy will be released into the atmosphere when the energy is converted. Scientific theory: Energy is released when new bonds are formed. If the bond is to be broken a sufficient amount of energy is required Amount of energy required to break certain bonds: Chemical bond Energy required to break bond (J) C-H 413 O-H 464 C-O 358 C-C 346 C=O 745 O=O 497 The breaking of bonds is an endothermic reaction meaning heat is taken in. The breaking of making of bonds is an exothermic reaction meaning heat is given out. ...read more.

Conclusion

21 34 Butanol 203.07 202.88 21 43 219.99 217.63 26 45 216.08 214.92 25 55 Pentanol 214.78 213.42 25 50 213.42 211.83 26 51 220.39 28.36 25 82 Hexanol 219.02 217.68 24 47 217.68 216.42 26 55 175.80 216.36 25 42 Heptanol 207.80 206.66 25 47 206.66 205.33 26 51 203.27 202.38 25 31 Octanol 202.38 201.61 24 36 201.61 200.78 25 34 Evaluation: There were a number of factors in this experiment that lead to some of the results being slightly out. 1. Heat conducted and convected away through the air 2. Radiation of heat out into the atmosphere 3. Change in temperature of tin 4. At high temperatures heat is lost faster to the air, which makes higher temperatures more inaccurate 5. Evaporation of water 6. Evaporation of alcohol after burning 7. Flame size changed due to type of alohol. How the experiment is stopped and whether it is on time 8. Different size of burner wick 9. 10. 11. 12. ...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 link between the numbers of carbon atom in a fuel with the amount ...

    + 360 + 510 = 2100 * Ethanol has five C-H bonds, one C-O bond, one C-C bond and one O-H bond therefore the calculation would be: (5?410) + 360 + 350 + 510 = 3270 * Propan-1-ol has seven C-H bonds, 2 C-C bond, one C-O bond and one O-H bond therefore the calculation would be: (7?410)

  2. Investigating the energy released from burning different alcohols.

    This heat was lost as it was not used to heat up the water. * The combustion of the alcohol was not complete, there was smoke produced from the alcohol burner showing that there was not enough oxygen. The smoke carried particles of carbon, this was shown on the under side of the copper can.

  1. "Could Sainsbury's add value to their business by using an alternative fuel for their ...

    7.4 Positive Spill over Effects: * Increased consumer loyalty * New customers switching from less environmentally friendly supermarkets * Improved brand image 7.5 Actionable: Sainsbury's must utilise the spill over effects of switching to Natural Gas in a marketing campaign.

  2. Investigate the enthalpy change of different alcohol

    Diameter: 7.6 cm Height: 10.1cm Can 2) Diameter: 6.7cm Height: 10.3cm What I needed: -no draught shielding system* -ethanol fuel** -50ml distill water inside the can -original water temperature inside the can-21C Time for temperature to rise to 30C (minute'second")

  1. Which fuel has the most energy?

    Fair test: To keep this a fair test we have to bear certain aspects in mind. The beaker that the water is contained in must be the same shape each time because if it is not, the flame may have more surface area of where to heat up the water.

  2. Esters. Esters are formed from an alcohol and carboxylic acid; this is an ...

    show that a product meets certain health, hygiene and safety standards before it can be approved for public purchase and use. As I have mentioned, one way this is accomplished is through the use of ingredients or formulations that were previously tested on animals.

  1. Which Alcohol is the Best Fuel?

    Alcohol Initial Mass (g) Initial Temp �C ? Mass (g) End Temp �C Butanol 227.1 24 1.3 48 Methanol 205.8 24 3.2 45 Pentanol 219.7 24 1.2 53 Propanol 225 24 1.3 58 Ethanol 184.7 24 1.6 47 From my results I want to be able to calculate the amount of joules of energy produced by each alcohol.

  2. What is the best Fuel?

    bottom of the copper can is always the same distance away from the wick of the fuel can (130 millimetres). I will also be shielding the experiment each time using four heat proof mats to make sure that the heat is in one place and isn't blown about when people walk past.

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