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

How does the concentration affect the rate of the reaction between Magnesium and Hydrochloric Acid?

Extracts from this document...


How Does the Concentration Affect the Rate of the Reaction Between Magnesium and Hydrochloric Acid? Aim-I have decided to investigate how the concentration of Hydrochloric Acid affects the time taken for a 2cm piece of Magnesium to fully react and dissolve. Theory-The following variables can affect the rate of reaction between magnesium and hydrochloric Acid; Surface Area With a larger surface area of solid, collisions between solid and particles are much more frequent, therefore more collisions/second equals a greater rate. Concentration A larger concentration means there are more collisions/second because the particles are closer together. Temperature If the Acid is heated then the Acid particles will have more energy so this means more collisions/second. Catalyst There are no Catalysts for this experiment. Prediction-In this experiment, I think that if the Concentration is doubled, then the rate of reaction will be a lot faster because of what was mentioned in the theory about concentration. After studying the theory, I made this decision because if there is a larger concentration then there isn't much space for the particles to move around, so there are more collisions/second between the Acid particles and the Magnesium. ...read more.


* Swirl the Conical Flask with a steady hand and not too quick. * Keep your eye on the magnesium so you don't miss the exact point at which it dissolves. * Record everything that you notice * Used distilled water to change the concentration of the Acid Apparatus- * Conical Flask * Beaker * Measuring cylinder * Ruler * Graph Paper * Stop-watch * Magnesium * Hydrochloric Acid * Distilled Water Main Plan- For each experiment I will use 2cm of magnesium ribbon and 2M acid. I will use 25cm of Hydrochloric Acid and when the concentration needs changing I will add Distilled water, because this will give the Acid particles more space to move around and so there won't be so many collisions/second. When I am measuring the Acid or Distilled Water I will need to put my eyes level with the top of the Acid or Distilled Water so that I can read it accurately off the measuring cylinder. Make sure there are no spillages. ...read more.


In the graph of Time against Concentration, my point is proved because the curve shows that the higher concentration then the longer the reaction time. My prediction has been backed up by my results that have been found. I didn't predict that the reaction would be an exothermic reaction, this was a surprise to me. Evaluation-These results that I obtained were of good quality. You have got to give a little lee-way because of experimental error, but on one of my results I had to repeat it because it was 9 seconds off the closest time, so I could get a better and more fairer average. If I was to repeat this experiment I would do more tests, larger concentrations and different lengths of magnesium. This would widen the range of results and give me a better conclusion. I think that I could of done with a few more concentrations just to boost my conclusion because I'm not too happy with the amount of different concentrations that I have used. ...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. to investigate how the concentration affects the rate of the reaction

    range of the first reading to give an accurate graph. I am not going to do less or more than three (3) readings because if less than three readings are taken, it does not give a definite result that the readings are accurate and if more than three readings are taken, the readings become very monotonous.

  2. How does changing the concentration of hydrochloric acid effect the rate of reaction between ...

    If the surface area is bigger the rate of reaction would also be faster. The weight of the magnesium will need to be kept the same so there is the same amount of magnesium each time for the same amount of collisions in every experiment.

  1. To investigate the effect of changing the concentration of acid on the rate of ...

    I will then draw the graph using the averages. I predict that the higher the concentration of acid, the faster the reaction. I.e. it will take a shorter time for a certain amount of hydrogen to be produced. The prediction is supported by particle theory, which shows that as there

  2. whether the strength of Hydrochloric acid will affect the speed of the rate of ...

    out the 50ml of hydrochloric acid and pour it into the conical flask and again the same as the burette method simultaneously put the magnesium into the conical flask, put the bung into the top of the flask and start the timer. We took down measurements in 5 second intervals.

  1. Planning experimental procedures.

    affects volume of carbon dioxide ( y axis). Then for the section of analyzing and drawing conclusions a graph is then drawn to show how varying concentration ( x axis ) affects rate ( y axis) Precautions: Safety glasses must be worn during the whole experiment as the hydrochloric acid is a volatile substance and spits when reacting with the calcium carbonate.

  2. How Does the Temperature of Hydrochloric Acid Affect the Rate of Reaction Between Hydrochloric ...

    Method: Firstly I measure out 5 of magnesium and weight it. Then I put 20of hydrochloric acid in to a measuring cylinder, 40of distilled water into another measuring cylinder, then put them both into a conical flask and stir it.

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