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

Burning fuels investigation

Extracts from this document...

Introduction

Burning fuels investigation Aim My aim is to find out which fuel releases the most energy per mole measured by heating water. Hypothesis In this investigation I will burn alcohols to heat up a beaker of water. I will be burning five fuels which are called Methanol, Ethanol, Propanol, Butanol and Pentanol. In my investigation I predict that the alcohol Pentanol would release more energy than the other alcohols because as the chain length of the alkanes get longer, the more energy is released. Apparatus * Retort stand * Clamp * Measuring cylinder * Thermometer * Heatproof mats * Copper can * Splint * Chemicals(Methanol, Ethanol, Propanol, Butanol and Pentanol) Independent variables * Using the same scales * Same amount of water in copper beaker * Same height of thermometer from water * Temperature of water before experiment * Weight ...read more.

Middle

Then I would use a spirit to light it and put it under the copper can. Then I would heat and stir the water until the temperature has gone up another 10 degrees Celsius. I will then blow out the flame and put the cap on the burner quickly and reweigh the alcohol. After I will repeat this with the next four alcohols. I will also repeat this experiment again. Results 1st Experiment Temp(degrees Celsius) Alcohol Starting mass(g) Mass after heating(g) Energy per mole(kj) 30-40 Methanol 168.34 160.78 555.56 30-40 Ethanol 166.66 164.32 1794.87 30-40 Propanol 166.37 165.66 5915.49 30-40 Butanol 160.48 159.82 6363.64 30-40 Pentanol 166.37 165.85 8076.92 2nd Experiment Temp(degrees Celsius) Alcohol Starting mass(g) Mass after heating(g) Energy per mole(kj) ...read more.

Conclusion

The results obtained were accurate because I calculated the averages which increased the reliability. Furthermore, I ensured the experiment was a fair test because all the points mentioned were taken into consideration providing me with conclusive results to form a firm conclusion. Evaluation In my investigation, there were no unexpected results as all the results follow the expected pattern. When doing an experiment such as this, there are normally scores for experimental or human errors. I considered all the points I mentioned in the fair test carefully and as a result, I believe my outcome was reasonably accurate enough in order to draw a firm conclusion. The way that I would have improved my experiment is that I would have used better and scientific equipments which would help me calculate more accurate and better results. ?? ?? ?? ?? Bhavik Vyas ...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 Aqueous 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 Aqueous Chemistry essays

  1. Measuring the energy released by burning ethanol.

    is 0.2g of ethanol I expect 0.4g to give out twice as much energy. When taking the readings of the evidence I must ensure that the temperature is at the maximum it could possibly be. I will stir the water regularly to make sure that I am not just measuring

  2. Investigate how the amount of heat produced by burning a fuel depends on the ...

    * Carefully place the thermometer into the can, and record the initial temperature, ensuring that you are only recording the temperature of the water, not including that of the tin as well. To make certain of this, hold the thermometer so that it is not touching the sides of the

  1. Antacid Investigation.

    by 1000 to get it in cm cubed so it shall equal = 0.76 cm cubed to neutralise the antacid. The amount of acid to neutralise the antacid =10.44 + 1.6 + 0.76 = 12.8 cm cubed of acid needed to neutralise the tablet. Experiment. Preliminary experiment.

  2. Aspirin Investigation

    that the starting product is salicyclic acid and it is specified our initial reagent should be Oil of Wintergreen. Also boron trifluoride etherate is highly corrosive and not practical for use in a school laboratory. Method two of preparation of aspirin is also incompatible because of the fact that the initial reagent is salicyclic acid.

  1. Neutralisation Investigation

    The polystyrene cup will also have a lid to reduce heat loss. Linking prediction with theory: The higher the number of H+ and OH- particles there are, the higher the temperature change. The higher the concentration of acid, the more the acid (H+)

  2. Reactivity Series Investigation

    will start the stop clock once the acid is warming up.After 20 seconds we will take the conical flask off the bunsen burner and out it on the table with the delivery tube bung in and then start to record the readings which is every 10 seconds and do it

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