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

An Investigation Into The Effect Of Varying The Acid Concentration On The Rate Of Reaction Between Hydrochloric Acid And Marble Chips.

Extracts from this document...

Introduction

An Investigation Into The Effect Of Varying The Acid Concentration On The Rate Of Reaction Between Hydrochloric Acid And Marble Chips I am investigating how the concentration of hydrochloric acid will effect the rate of reaction when calcium carbonate (marble chips) are added to the acid. Hydrochloric acid + calcium carbonate � Calcium chloride + Water + Carbon Dioxide To measure the rate of reaction I could * Time how long it takes for the Ca CO3 to dissolve * Time how long it takes for the fizzing in the system to finish * Time how long it takes to collect a specific volume of CO2 * Time how long it takes for a loss of a specific mass to take place. The factors that could affect the rate of this reaction are, temperature in which the reaction takes place, concentration of the acid, surface area of calcium carbonate, using a catalyst. The variables are all of the factors affecting the rate of reaction. I will keep all of the variables the same apart from the concentration of the acid. Reactions happen when particles collide together with enough energy to form a bond, therefore the more collisions the more chances of bonds being made. This is the collision theory. As the concentration of the acid increases there are more particles for the calcium carbonate to react with in the same amount of ...read more.

Middle

As soon as this is done I shall start the timer. Once the measuring cylinder has collected 100cm� of carbon dioxide I shall stop the timer. I will record my time to the nearest second. I shall repeat this once more with each concentration, with 6 different concentrations. Results Amount of CO2 collected (cm�) Time into reaction (minutes) 0.25m Test 1 0.25m Test 2 0.25m Av 0.5m Test 1 0.5m Test 2 0.5m Av 0.75m Test 1 0.75m Test 2 0.75m Av 1 6 4 5 18 14 16 27 19 23 2 19 15 17 29 23 26 46 34 40 3 24 22 23 36 34 35 58 48 53 4 32 28 30 41 47 44 70 62 66 5 34 36 35 59 51 55 77 71 74 6 37 41 39 62 64 63 86 80 83 7 42 46 44 65 69 67 93 89 91 8 43 47 45 72 74 73 98 94 96 9 49 49 49 79 81 80 100 100 100 10 51 53 52 80 82 81 11 53 55 54 83 85 84 12 54 56 55 85 87 86 13 56 58 57 86 88 87 14 57 59 58 88 88 88 15 58 60 59 88 88 88 Amount of CO2 collected (cm�) ...read more.

Conclusion

This is an alternate way of measuring the reaction, without having to upturn the cylinder. I am happy with the consistency of the temperature of the HCl. My results are accurate; however I do appear to have results that are anomalous, which are prominent in my graph. For example the results for 0.25m at 7 minutes, and 0.5m at 7 and 8 minutes are inconsistent and stand out on the graph. These could have occurred if the conical flask was shaken during the experiment. I repeated all of my results a second time none of my results were drastically out of place however there were some which perhaps more inconsistent than others. If I were to repeat the experiment I would make sure that I repeated the experiment three times instead of just 2. Although this would take up much more time, I feel it more important to obtain the most accurate results possible. In addition, out of pure interest I would like to find what happens when the temperature of the HCl increases. To do this I would heat the acid to different temperatures at regular intervals and add the same amount of Ca CO3. I expect to see that as the temperature increases so does the reaction time. My precise results enable me to come to strong conclusion that the higher the concentration of HCl the less time was taken to collect 100cm� of CO2 when reacted with Ca CO3. ...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

    Marble Chips and Hydrochloric Acid.

    4 star(s)

    This is the calculation used to determine the amount of CO that will be produced, by the experiment. Step 1 Firstly, we must work out how much Calcium Carbonate is equal to 1 mole. CaCO = Ca C CO 40 + 12 + 16 + 16 + 16 = 100

  2. Marked by a teacher

    In this investigation we are going to measure the rate of reaction of marble ...

    3 star(s)

    of reaction was very slow, which was probably due to the concentration of acid being 0.25M which is quite weak. Results for 0.5M HCl: Medium Marble (CaCO3) 0.5M HCl Volume of CO2 /cm� Time (s) Test 1 Test 2 Test 3 Test 4 Average Range 0 0 0 0 0

  1. Investigating the reaction between Marble Chips and Hydrochloric Acid.

    Amount of Carbon Dioxide gas already collected (ml) at these set periods of time (seconds) in the reaction Acid Concentration (Molar) 0 30 60 90 120 150 2 0 24 48 64 86 n/a 2 0 25 50 66 93 n/a 2 0 20 43 62 82 98 Average Results

  2. To investigate the factors which affect the rate of reaction between marble chips and ...

    Variables: Independent variable: This will be the size of the chips as this is the factor that I intend to change. In our experiment involving surface area the independent variable is the surface area. The independent variable is the part of the experiment that can be changed, i.e.

  1. Rates of Reaction between hydrochloric acid and marble chips

    So in my preliminary work, before I can start my experiment, I need to find the right chip size to use for accurate results. c) Apparatus I'm going to use. A conical flask - to carry the gas from the flask into the cylinder of water.

  2. Investigate the Time Taken for a Reaction to Take Place Between Antacid Tablets and ...

    In this experiment I will test different concentrations of hydrochloric acid reacting with antacid tablets. My prediction I predict that when the concentration of hydrochloric acid is increased, the rate that the reaction takes place will increase. I predict that if the concentration of hydrochloric acid is doubled then the rate of reaction will also double.

  1. Investigating the rate of reaction between hydrochloric acid and calcium carbonate

    Explaining Conclusion The rate of reaction between calcium carbonate and hydrochloric acid increases when you increase the concentration of acid the graph shows each curve get steeper to confirm my prediction I calculated the rate of reaction from my graph I did this by taking two points on the graph

  2. Investigating how the concentration of acid affects the rate of reaction between hydrochloric acid ...

    After placing the conical flask on top of the balance, put in the 2 grams of marble chips into the flask. Seal the conical flask immediately by placing the cotton wool on the top of the flask. 9. Start the stopwatch once the marble chips are in.

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