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

The aim of the coursework is to investigate the rate of reaction between hydrochloric acid and magnesium.

Extracts from this document...

Introduction

Chemistry Coursework Nick Jones Rates of Reaction Aim The aim of the coursework is to investigate the rate of reaction between hydrochloric acid and magnesium. I have chosen to investigate this by looking at the amount of hydrogen produced and time taken. My chosen variable to investigate this further is the concentration of the hydrochloric acid, and if this affects the rate of reaction and by how much. Background Knowledge - Collision Theory In order for magnesium and hydrochloric acid to react, their molecules must collide with enough energy so a reaction can occur. The reaction that occurs is as follows: Equation : Mg + 2HCL --> MgCl2 + H2 Magnesium + Hydrochloric --> Magnesium + Hydrogen Acid Chloride One molar strength hydrochloric acid has half of the amount of atoms than two molar strength hydrochloric acid has; therefore collisions of the particles occur twice as often. ...read more.

Middle

Apparatus 4cm Magnesium ribbon strips x15 Hydrochloric Acid- in 1/2 M, 1M, 2M, 3M and 4M strengths 100cm� measuring cylinder 25cm� measuring cylinder 250cm� conical flask Rubber bung and delivery tube Water bath Stopwatch Safety goggles Method The bowl is filled half full with water, and the 100cm� measuring cylinder is filled with water and turned upside down, forming a vacuum. The end of the delivery tube is under the water beneath the measuring cylinder, so that when the hydrogen is produced it is collected in the measuring cylinder. 25cm� of the chosen molar strength acid is then placed into the conical flask. The strip of magnesium is dropped into the acid, and the rubber bung replaced as quickly as possible. ...read more.

Conclusion

There is no obvious numerical link between the different molars, apart from the fact that as the molar increases, the rate of reaction doesn't increase proportionally; for example, the rate of reaction increases dramatically as the molar doubles. Evaluation In my opinion the investigation was a success and was carried out accurately. However, there are some factors which could be improved to make for a more accurate result for possible future investigations. One such factor is that of using the magnesium ribbon. Using 4cm strips is not very accurate, and could be improved by measuring out a specific mass. Also, using a lower molar variety of acid would have meant for a slower reaction, thus less hydrogen would escape due to human error. After completing the experiment, I feel that all the experiments were conducted to a suitable degree of accuracy, and I am satisfied with the results that I have received. ...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 Patterns of Behaviour 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 Patterns of Behaviour essays

  1. Marked by a teacher

    Rate of Reaction Chemistry Coursework

    4 star(s)

    We chose to use the burette for this as it was easy to read of. It has the numbers down the side so we can see how many ml we are losing. We have to put it into the water bowl to make sure we don't lose any water before we perform the reaction 4)

  2. Science Coursework

    temperature will increase the rate of reaction. 1.The temperature increases the number of collisions. When the temperature is increased the particles all move quicker therefore there will be more collisions 2. Concentration or pressure increases the number of collisions. If the solution is made more concentrated it means there are

  1. Enzyme Coursework.

    I set up the apparatus as u can see in my method section. I carried out seven experiments to see which quantities, concentrations and equipment would work best at. I tried to collect oxygen in a measuring cylinder so I could accurately calculate the amount of oxygen given off at

  2. ICT modelling spreadsheet - This coursework was designed to investigate the uses of electricity ...

    This means that each customer receives 4 electricity bills per year. A quarterly bill totals up the price for each week then multiplies it by 13. A quarterly bill is NOT a bill for every 3 months, as this only consists of approximately 12 weeks, meaning that there are only 48 weeks in a year.

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