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

An investigation into how concentration effects the reaction between hydrochloric acid and marble chips.

Extracts from this document...


An investigation into how concentration effects the reaction between hydrochloric acid and marble chips Plan As I will be using acid in the experiment I will wear safety goggles during the experiment. Set up the apparatus as shown The experiment I will be: CaCO3 + 2HCl CO2 + CaCl2 + H2O Calcium carbonate + Hydrochloric acid Carbon dioxide + Calcium chloride + Water I will monitor the rate by measuring the speed at which the product (Carbon dioxide) is given off. Preliminary Results I carried out a series of experiments to decipher what size chips, what mass of chips and what volume of solution I should use in order to get the best results from my experiment. I also took the temperature during these experiments to see if there was a sudden drop or increase in the temperature which may affect my results, there only seemed to be a drop or increase of around 1 degree each time so I do not think that there is much to worry about. ...read more.


seemed to run out of acid so I will not use this, however, the other 2 appear to be relatively the same because both had the same amount of chips to work with and therefore will produce at around the same rate. Prediction A reaction occurs when particles collide. I predict that the higher the concentration of Hydrochloric acid, the faster the rate of reaction will be. I have predicted this because the higher the concentration of Hydrochloric acid means the higher the amount of acid particles there are in the solution and therefore there is a much greater chance of the acid particles colliding with the chips, therefore speeding up the rate of the reaction. Whereas, if the solution was much more dilute, the particles would need to travel a lot further in order to collide with one another, because there wouldn't be as many of them. I also think that if the number of acid particles in the solution in doubled then the rate would double also as there is twice the chance of collision of the particles. ...read more.


This is all shown in the graph, which also states the rates at which the reactions have taken place. Evaluation There were no anomalous results in the experiment. A few points were slightly off of the line of best it but no enough to call them anomalies. The test was as fair as I could have made it given the equipment in school. The chips were weighed to as close to 3g as possible but with only 2 decimal places to work to and no way of splitting the chips a lot of the experiments were one or two grams under/over weight. Also the temperature varied slightly when I did each experiment which could have made a slight error in the results, to resolve this I could have sat the whole experiment in a water bath with a controlled temperature. As a further experiment I think I could have investigated how changes in temperature affect the rate of reaction, whether one or two degrees actually make a lot of difference. I could use a water bath to keep the experiment in and very the temperature of the water in it slightly to see how it affects the rate of reaction. Steph Winterbottom 1 ...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. Investigation of the reaction between marble chips & dilute hydrochloric acid.

    increasing the concentration of acid molecules increases the frequency or chance at which they hit the surface of marble chips to dissolve them. (Showed in Diag. 2) Diag.2 ==> Slower Faster High concentration acid has more moles of acid than water.

  2. Reacting Marble Chips with Dilute Acid.

    The chosen concentration works well as is the range between the highest and the lowest Results Set 1: Concentration (M) Vol. of acid (cm�) Vol. of water (cm�) Vol. of gas (cm�) Temp. (�C) Quantity Mass of Marble Chips (g)

  1. Chemistry Rates Of Reaction Marble chips and Hydrochloric acid

    Also the points on my graphs would get steeper the faster the reaction. I think my graphs will in general show positive correlation. This would support my other prediction of the lines getting steeper the stronger the acid. In summary: - As we are neutralising something I think it will bubble and fizz.

  2. An Investigation to determine the factors which affect the rates of reaction between Marble ...

    But all in all I think I will choose to use the medium chips. Also both sets of marble chips were able to react with 0.2 M HCL; hence I have found the two limits of my concentrations, 2M and 0.2.

  1. Investigate how concentration affects the rate of a reaction using marble chips (CaCO3 ) ...

    We will make our experiment a fair test by using the same person to start and stop the stop clock as each person's reaction time may vary. Also we use the same person to pour the solution into the

  2. An investigation to find out how the concentration of acid affects the rate of ...

    the number of HCl molecules present will decrease as they react with CaCO3 molecules to produce calcium carbonate, water and carbon dioxide. Although carbon dioxide escapes into the air, the water produced will dilute the hydrochloric acid even further, so the concentration will go down, as there will be less successful collisions, as there will be less HCl molecules.

  1. An investigation to see if concentration influences the rate of reaction between dilute Hydrochloric ...

    Thermometer: - To make sure the temperature is constant at all time 17. Electric balance: - To measure the weight of marble chips Diagram Safety- - Wearing goggles: acid is corrosive and can eat through skin, therefore I will wear goggles to protect my eyes.

  2. To find the effects of the concentration of hydrochloric acid on the rate of ...

    This is because the higher the concentration of acid the more particles there will be to react with the marble chips. Increasing the rate of reaction. The rate of reaction will slow down when the concentration of water is increased because there will be more water particles then of acid reacting with the marble chips.

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