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

Do different fuels produce different amounts of energy?

Extracts from this document...

Introduction

Do different fuels produce different amounts of energy? Planning I am going to investigate the energy released by burning alcohol. I will try to find out how the carbon atoms in each alcohol vary with the energy release. Alcohols are a series of related organic molecules. The general formula of an alcohol is: n = number of Carbon atoms Alcohols Formula Ethanol C H OH Propanol C H OH Butanol C H OH Pentanol C H OH Hexanol C H OH The complete combustion of an alcohol will produce Carbon Dioxide and Water by reacting with Oxygen. Combustion involves breaking and making chemical bonds. Breaking bonds requires energy input, making bonds releases energy. In exothermic reaction, the reactants has a higher energy level than the products, the difference is given off as heat energy. In endothermic reaction, the reactants has a lower energy level than the product, the difference is the amount of energy taken in from the surroundings. I will need to investigate whether different fuels produce different amount of energy. To do this, I am going to do an experiment. ...read more.

Middle

- 61 136.58 134.04 2.54 27 - 62 Pentanol 108.30 107.25 1.05 22 - 57 107.25 105.93 1.32 22 - 57 105.93 104.25 1.68 23 - 58 Hexanol 213.98 212.80 1.18 24 - 59 212.80 211.09 1.71 25 - 60 211.09 210.08 1.01 26 - 61 Alcohols Number of Carbon atoms Molar mass (g) Average mass burned (g) Number of moles burned Ethanol 2 46 2.85 0.062 Propanol 3 60 2.56 0.043 Butanol 4 74 2.09 0.023 Pentanol 5 88 1.35 0.018 Hexanol 6 102 1.30 0.013 No. of moles of burned = mass burned (g) / molar mass Energy = mass of water used x specific heat capacity x temperature rise (j) (kg) J/kg �C (�c) 147j = 1 x 4.2 x 35 Analysis From the first graph (energy against number of carbon atoms), it shows a straight horizontal best-fit line which means all the alcohol gives out the same amount of energy. This is because: Energy = mass of water used x specific heat capacity x temperature rise (j) (g) (�c) The molar mass of the alcohol or the number of carbon atoms does not exist in the formula which means the energy is not affected by the kind of fuel being used. ...read more.

Conclusion

I can also use a wider range of alcohols such as methanol and heptanol to get a wider range of results to support a firm conclusion and give a better graph reading. I can do the experiment in this way: Further experiment Planning Apparatus - Spirit burners (containing methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol) - Heat proof mats - Clamps and stands - Copper water container - Electronic balance ( 2 decimal places) - Thermometer - Measuring cylinder Safety control - I have to wear goggles, prevent any accidents that can damage my eyes - I have to make sure all the school bags are under the table, in case it trips me over - I have to make sure I handle all the glassware carefully Method 1. Set up the experiment as the diagram shows 2. Weigh and record the spirit burner's weight 3. Put the spirit burner back to position and light it 4. When the temperature of the water has increased by 35 �c, put the fire off 5. Weigh and record the spirit burner's weight 6. Repeat the experiment three times with each alcohol 7. Plot graph (energy against number of carbon atoms, number of moles burned against carbon atoms) 8. Draw best-fit line ...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 Classifying Materials 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 Classifying Materials essays

  1. The energy released when different alcohols are burned

    The energy required forming new bonds increased, as the molar mass increased because there were more bonds to form. As the number of bonds to form increased, so did the energy required in forming them, as the reaction is exothermic.

  2. Free essay

    Periodic table

    Heredity - passing on characteristics and the study of how characteristics are inherited is called genetics. If two alleles are the same i.e. AA (dominant pure) or aa (recessive pure) it is a homozygous gene. If they are different Aa (hybrid pure)

  1. Rate of reaction of different concentrations of sodium thiosulphate.

    The preliminary experiment had been done as a whole class. The preliminary experiment was done so everyone knows how to carry out each stage in the experiment. Firstly we had to layout a detailed and appropriate table to record the results in.

  2. Hydrogen-Oxygen Fuel Cells: Case Study

    However, the cost of solar cells and of the transportation of solar energy (with current technology) means that this is just not an option (b) Another method of extraction is treatment of methane. This method deals with environmental issues and will be discussed below.

  1. The role of mass customization and postponement in global logistics

    and speed will remain major competitiveness determinants, but manufacturing companies will increasingly need to provide greater product variety and customer focus. The challenge is therefore to achieve mass customization - the ability to provide variety, and individual customization, at prices comparable to standard goods and services.

  2. Particulate Nature of Matter

    The particles that make up matter (atoms) are always in constant motion. These particles are held together by the We think that all matter is made of particles. There are forces between these particles and these forces hold the particles together (in solids and liquids).

  1. Antimatter and matter

    Dirac's equations worked exceptionally well, describing many attributes of electron motion that previous equations could not. But his theory also led to a surprising prediction that the electron must have an "antiparticle," having the same mass but a positive electrical charge (the opposite of a normal electron's negative charge).

  2. Finding out the amount of energy given off by different types of alcohol when ...

    I will record the water temperature at the beginning and the end of each two minute experiment, I will also measure the mass of the alcohol at the beginning and the end of each experiment as well. For this experiment to be a fair test I will make sure the

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