• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10

Investigating the Concentration of Hydrochloric Acid on the Rate of Reaction.

Extracts from this document...


Chemistry Coursework Investigating the Concentration of Hydrochloric Acid on the Rate of Reaction In this coursework I am going to investigate the rate of reaction and how this is increased or decreased by the concentration of acid I will use. My aim in this experiment is to find the concentration of acid which will produce the fastest reaction. When carrying out my experiment I will use the following equipment: measuring cylinder conical flask clamp stand plastic beaker thistle funnel ice-cream tub The chemical reaction which occurs in this experiment will be: Calcium + Hydrochloric Calcium + Water + Carbon Carbonate Acid Chloride Dioxide CaCo (s) + 2HCl (aq) CaCl (aq) + H O + CO I will perform several experiments using the previous apparatus to see which concentration of hydrochloric acid will yield the most carbon dioxide. Apparatus Set Up Method To carry out my experiment I will set up my apparatus as I have previously shown. I will also need: * Three measuring cylinders - a large on which is to be used in the experiment and two smaller ones to measure the acid and water in. * 5 grams of Calcium Carbonate - measured out using a top pan balance. Firstly I will set up the above apparatus and ensure it is all safe and works. I will totally fill the large measuring with water and place it upside down in the ice cream tub, with the clamp stand holding it in place. The 5 grams of Calcium Carbonate will be placed in the conical flask with the thistle funnel on top. ...read more.


Another factor which may affect the rate of reaction is its temperature. Low Temperature High Temperature An increase in temperature will increase the rate of the reaction. This is because particles have more energy when they are heated causing them to move around more. This results in more collisions and more collisions between particles means a faster reaction. Preliminary Work For my preliminary work I will carry out an experiment using the same apparatus set up in the same way however I will investigate which sized chips produce the largest yield of Carbon Dioxide. I will use 5 grams of Calcium Carbonate and 20cm� of Hydrochloric Acid. Results Conclusion The graph shows that the smaller chips are the quickest to react and give of the most Carbon Dioxide. The graph is steep in the first 10 seconds because there are more reactants to collide with each other however later on they have turned in to products. For my actual experiment I am going to use medium sized chips because my preliminary work has allowed me to find out these are the most efficient. I chose medium chips because they should produce Carbon Dioxide at a good pace for me to be able to take readings easily, unlike small chips which have a massive surface area and react too quickly. Analysis When plotting my graphs, I decided to plot four different graphs - 1 for each type of acid used and 1 for the averages in each experiment. My graphs are plotted through the origin because I began timing my readings from zero so therefore my graphs must begin from zero. ...read more.


I would also make sure all my equipment was as new as possible and worked correctly. To improve my experiment further or find out if the rate of reaction did slow down I would carry out the experiment for longer than 2 minutes to see if a pattern emerges. What's more, I could repeat each volume to allow me to calculate an average which remove most of the errors and improve my experiment further. To back up my results I could carry out another experiment however this time investigating a different factor which affects the rate of reaction, such as temperature or using a catalyst to speed up the rate of reaction. To investigate temperature every other variable must be kept constant and only the temperature be altered. If I was to carry out this experiment I would use the apparatus I have used in this experiment, set up in the same way. To change the temperature I could place the conical flask in a warm water bath to increase it and ice bucket to decrease it. Readings would be taken of the amount of Caron Dioxide produced at different temperatures, such as 50�C, 60�C, 70�C and 80�C. The experiment should be repeated several times to ensure the results are accurate and averages can be calculated. If the experiment goes correctly as the temperature increases the rate of reaction should also increase because when particles are heated they have more energy causing them to move around more. This results in more collisions and increases the rate of reaction. ?? ?? ?? ?? Rosanna Sherrard 11G ...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

    What affects the rate of a reaction? The reaction I will be investigating is ...

    3 star(s)

    Preliminary Tests Before I started my main experiment I carried out 3 preliminary tests, these test where to find: - what size of marble chip to will be the most suitable - what volume of HCl to use - what range of concentration to use.

  2. Free essay

    Close Your Eyes

    What was I going to do now? Danny probably thinks I don't like him. Well, he's got that wrong. I do like him...so much. I really did want to kiss him but I guess I was just scared. I needed to talk to someone but who? I couldn't talk to Carrie, Danny was like a brother to her and there was no way I was telling mum.

  1. Investigate how changing the concentration of hydrochloric acid affects the rate of reaction between ...

    This may speed up my reaction a little. However, I do not think that it will affect the reaction enough to notice. Catalysts: Catalysts speed up a reaction without being used up themselves. They do this by lowering the amount of activation energy needed to knock the electrons out of place.

  2. Investigate the concentration of hydrochloric acid which produces the most carbon dioxide in the ...

    But if a more concentrated solution is used, there are more particles and there is a greater chance of the particle colliding with another calcium carbonate particle. When the concentration is doubled, I expect the amount of particles to be doubled, and the amount of collisions to be doubled also.

  1. Demonstrate how the changing concentration of the hydrochloric acid affects the amount of carbon ...

    Purity of the substances- As in the catalyst section, though some impurities may not be left unchemically changed at the end of the reaction. This could affect the rate of reaction because there would be more collisions and so would increase the rate of reaction.

  2. A report investigating the effect of Concentrated Hydrochloric Acid on Marble Chips (Calcium Carbonate).

    The rate during the reaction does not stay constant, it changes throughout the reaction, and its greatest at the start but gets slower as the reaction proceeds. This is mainly to do with the fact, the longer the reaction has taken place the more of the reactants react, leaving fewer reactants with less chance of reacting.

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

    Calculating the Yield 2HCL(aq) + CaCO3(s) ---> CaCl2(aq) + H20 (l) + CO2(g) 37g 100g 110g 18g 44g Because the equation has been balanced I will require two HCL which means doubling the amount 37 x 2 = 74g 74gr reacts with 100gr to produce 110gr and 18gr and 44gr which is then halved to use

  2. An Investigation: Factors That Affect The Rate Of Reaction between Calcium carbonate and Hydrochloric ...

    the results, and if the acid spills it could be expensive to replace a new one. Same goes with the gas syringe. The reason we used a stand clamp is because the equipment were held steadily to increase the gas flow through the tubing.

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