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

Investigating the rate of reaction between magnesium and hydrochloric acid at different temperatures.

Extracts from this document...


ALEX DIXON SCIENCE COURSEWORK Investigating the rate of reaction between magnesium and hydrochloric acid at different temperatures. Mg + HCl ==> MgCl2 + H2 magnesium + hydrochloric acid magnesium chloride + hydrogen After having done 3 different experiments to prove the collision theory, we found that measuring the amount of gas through a delivery tube into a measuring cylinder is the best because it is easy to record the results. The other experiments included: Mass loss - this was very fiddly weighing out and the numbers between each time we took the result were so small it was very hard to plot a graph. Surface area - this experiment was good in explaining the collision theory but it could not be used to find out different rates with temperature because it would be too fast with the chosen chemicals.(If powdered Mg was used) Timing until Mg disappeared - this was a very simple experiment but as the temperature got higher (40?C ) it was virtually the same time as 50 C and at low temperatures took too long. We are going to use the gas collection idea because it is the most accurate and is the simplest to plot on a graph. ...read more.


There would be more collisions happening the more concentrated the acid becomes and this would change the rate. We will use the hydrochloric acid every time as changing to other acids can vary in strength. We are planning to repeat the experiment 3 times so that we can get an average and we avoid the chance of an odd result. In the below diagram when the acid is heated to the correct temperature the flask will be taken off from the heat as the gauze would still be hot and would continue to heat the acid. The equipment will be set up as follows: When the Mg is added to the HCl they will produce hydrogen in the reaction. The hydrogen will travel down the delivery tube and will bubble up into the measuring cylinder, therefore we will be able to measure the volume of hydrogen given off. The water in the trough is to prevent the gas escaping out the bottom of the measuring cylinder. We will use a Bunsen to heat the HCl. To make the experiment safe we will wear safety glasses in case the HCl gets splashed. ...read more.


Firstly we could investigate the rate of reaction between Mg and HCl but this time the variable could be the concentration of the acid. This would be a good test to see if the amount of particles in the acid changed the rate of reaction which would also prove the collision(More collisions as particles are denser).To test this theory we would use the same equipment and plan but just change the concentration of the acid instead of the temperature of the HCl. We could also test to see if Mg powder reacted quicker with the HCl as the surface area would be larger so there would be more frequent collisions. This also comes back to the collision theory and would be a good test to prove it. Using this method you could change any of the variables(concentration of the acid, temperature of the acid etc) and compare it with the results using Mg ribbon. The other test we could do is the mass loss experiment. This would prove that the reaction lost weight during the reaction and like the last alternative experiment any of the variables could be changed. This also refers back to the collision theory that a reaction loses weight as if goes on which would be useful to test the different rates of reactions. Science Coursework Alex Dixon ...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

    The Effect of Concentration on the Rate of Reaction between Magnesium [Mg] and Hydrochloric ...

    4 star(s)

    change the time intervals to 30 seconds this was only done for the 0.g mols/dm3 . These results will help us determine the 5 concentrations that we need to use. 3mols/dm3 and 4mols/dm3 reacted too fast for us to take any readings therefore it was not suitable for our experiment.

  2. Investigating the Rate of Reaction Between Hydrochloric Acid (Hcl) and Magnesium (Mg).

    * Pressure of the container By increasing the pressure, you squeeze the molecules together so you will increase the frequency of collisions between them. This is collision theory again. However, this will not be relevant in my experiment due to the fact that I am using a liquid and the pressure of a liquid cannot be increased.

  1. Find out how different concentrations of HCl affect the rate of the reaction with ...

    I also did the calculations to find out the mass of magnesium used and the volume of HCl used. CALCULATIONS. The equation for the reaction is: Mg(s) + 2HCl(aq) ----------> MgCl2(aq) + H2(g) The ionic equation for the reaction is: Mg (s)

  2. Investigating the Effect of Different Concentration Of Acid Rain On The Rate Of Reaction ...

    The above calculation shows that 10.4 dm3 is the minimum amount I need to obtain 100cm3 from 0.10 grams of magnesium. Variables: As in most scientific experiments, variables have to be found and then controlled in order for the investigator to be able to compare results accurately and form reliable conclusions.

  1. Rates of reactions between HCL and magnesium ribbon.

    stop when the reaction is complete and the magnesium has completely disappeared. Conclusion I can conclude that if you double the concentration of the acid the reaction rate would also double, this is because the ions are closer together in a concentrated solution.

  2. By doing this investigation I want to find out what effect different temperatures have ...

    This will be magnesium turnings. I will also use the same type and concentration of hydrochloric acid. I will use an excess of hydrochloric acid of concentration 2 moles per dm3. For each reaction I will use exactly 20ml of hydrochloric acid and 0.1g of magnesium turnings.

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