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

Investigate the effect of changing the concentration on the rate of a reaction.

Extracts from this document...


Aim: I am going to investigate the effect of changing the concentration on the rate of a reaction. The reaction I am going to investigate will be: Mg + 2HCl MgCl + H To follow the rate of this reaction I will measure the volume of the hydrogen produced every 10 seconds for 2 minutes using a gas syringe. Safety: I must wear safety goggles at all times in case harmful chemicals get into your eyes. I mustn't wonder or run around in the class. I must handle all equipment with care and Place equipment in the centre of the table so it doesn't fall off and break. Fair Test: To make this test fair I will change the concentration of the acid. I will keep the same surface area of Magnesium i.e. using a magnesium ribbon. I will also us the same length of magnesium (2cm). Temperatures must be kept the same using a water bath. ...read more.


This was done so that the equipment wouldn't drop on the floor. We then had to cut out the magnesium ribbon into smaller pieces measuring exactly 2cm. A ruler was used here to give us an accurate measurement. We had to place the 2cm ribbon into a test tube and using a measuring cylinder we had to measure 0.25ml of the hydrochloric acid. This was for the first test. After Measuring the acid we then had to pour it into the test tube with the ribbon inside and then time how long it took for it to disappear using a stop clock. The results are shown below: Concentration of Acid Time for reaction to reach completion (sec) Average (sec) Test 1 Test 2 Test 3 0.25 142 140 136 139.25 0.5 122 119 153 164 0.75 90 93 92 92.25 1 82 80 75 78.75 2 33 27 30 31.25 The graph that I have constructed by hand (overleaf) ...read more.


We had gone through planning the experiment so many times I could practically do it without looking at my plan. The results of my test were very accurate as I repeated each concentration three times which enabled the elimination of random values, which wouldn't help me in constructing my graph or the rest of my coursework. Whilst I was doing my experiment I straightaway knew how I could make improvements and more came when the test was over. I could've used a larger range of concentration to get more results and construct a more detailed graph to see any other abnormal values. I could've also used different types of acids to compare graphs and results. I could also of used a larger range of magnesium ribbon. In other words just increased the length of the ribbon. The method I used for this investigation was quick, simple and appropriate for getting the results. Working with 3 other people speeded up the process but I felt that if we did our experiment separately and compared results the outcome would've been more precise. Max Buadi 10D ...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. To investigate by the use of an experiment to measure the effect of changing ...

    + 2 HCl (aq.) � MgCl2 (aq.) + H2 (g) We can use different concentrations of hydrochloric acid in each test, keeping all other factors the same. We can measure concentration in moles per cubic decimetre (or moles per litre), abbreviated to mol dm-3.

  2. Find out the effect of concentration of acid, in thereaction between dilute hydrochloric caid ...

    An equation for the reaction: Magnesium + hydrochloric acid >magnesium chloride + hydrogen Mg(s) + 2HCL(aq)>Mgcl2(aq) + H2(g) 1mole 2moles 1mole 1mole So we can say that one mole of magnesium reacts with 2 moles of hydrochloric acid.We know that the concentration of hydrochloric acid that we start with is

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

    Below this, there would be the additions, standard charge plus the V.A.T., and then finally the total billing cost. The columns, which contain formulae, are the total amount of hours (per week). This is calculated by multiplying the amount of times each item is used per week, by the average time it is used for.

  2. The aim of this investigation is to find out the effect of concentration of ...

    particles move faster and travel a greater distance in a given time and so will be involved in more collisions. Or the temperature may slow the reaction down due to particles wwdg dgw esdgdgs aydg dgba ndg kcdg dguk. moving slower.

  1. Experiment to investigate the effect of the concentration on the rate of reaction

    This is cause would cause the particles of the 2M acid to have twice as much successive collisions as the 1M concentration of acid. This would therefore result to the rate of reaction doubling. (In this experiment, it is essential to keep the volume of the acid the same).

  2. To Investigate the Effect that the Concentration of Acid has on a Reaction

    Of H20 (Cm3) 4.0 40 0 3.5 35 5 3.0 30 10 2.5 25 15 2.0 20 20 1.5 15 25 1.0 10 30 0.5 5 35 In this experiment the water I will be adding to the acid to help dilute wont just be tap water, I will have to use distilled water.

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