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

Investigating the reaction between Calcium Carbonate and Hydrochloric acid.

Extracts from this document...

Introduction

Chemistry Coursework Investigating the reaction between Calcium Carbonate and Hydrochloric acid What I will be investigating- The rate of reaction means the speed at which a reaction will occur. Many different things can affect this. In this experiment I am going to investigate what effects the change in the concentration of hydrochloric acid will have on it's rate of reaction with calcium carbonate (marble chips). I could also have chosen to investigate the effect that temperature had on this reaction. I would expect that as I increased the temperature of the acid the reaction would happen faster. This is because the particles gain energy and move around faster, causing more collisions, which increases the rate of reaction. I need to make sure that my experiment will be fair and so I will keep all variables apart from the concentration of hydrochloric acid constant. These variables are the equipment used, the mass of the marble chips, the amount of water in the measuring cylinder, the total volume of the solution in which the acid is and the size of the marble chips. ...read more.

Middle

If there is enough energy then the reaction takes place and a product is formed, but if there isn't enough then no reaction takes place. Diagram- Apparatus- A 25ml measuring cylinder A 50ml measuring cylinder Trough Marble Chips Acid Water Conical Flask Delivery tube Stopwatch Method- �Set up the apparatus as shown in the diagram �Measure 50ml of acid into a measuring cylinder �Put 2.5g of marble chips into the conical flask �Measure 25 to 50ml of water into the measuring cylinder at the end of the delivery tube �Put it into the water over the end of the delivery tube with your thumb covering the top of the measuring cylinder so that no water escapes and let go �Pour the acid into the conical flask, place the rubber bung on the top of the conical flask and start the stopwatch �Wait for the water in the measuring cylinder has gone then stop the stopwatch �Record your results in a table �Now try the experiment again but changing the concentration each time Pilot Results- Concentration ratio of acid to waterSize of Marble ChipsWater in measuring cylinder (ml)Time (s) ...read more.

Conclusion

Therefore this means that the weaker the solution gets the slower it takes to react. There is a great difference between the last two results (20:30 and 10:40). This is because in the last experiment the acid is very diluted and so the reaction takes a long time. My prediction and the theory of the experiment fit well with my results. They show that- the more concentrated the acid the quicker the reaction will take place because there will be more hydrochloric acid particles than water particles for the marble chips to collide and react with. This means that more collisions will happen and there will be a quicker reaction time. Evaluation- I had no anomalous results in this experiment. These results are quite accurate but could be improved. If the experiment was done five times and then the average is taken then results would be more accurate. Also I could have started off with the lowest concentration of acid so that I could practice getting the bung on the top of the conical flask quickly. Conclusion- Overall the results obtained were quite accurate and showed that an increase in the concentration of the acid means that the rate of the reaction increases and the time taken is decreased. ...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. Peer reviewed

    The Effect of Concentration on the Rate of Reaction when you React ...

    3 star(s)

    The results that I obtained were a good set of results due to repetition and precise recording of the results. However, I think I could have improved the results by performing 5 attempts instead of 3, giving even more reliable results that were very trustworthy.

  2. What Factors Affect the Rate of Reaction Between Hydrochloric Acid and Calcium Carbonate?

    Another method was to put the delivery tube in a dish full of water and simply count the number of bubbles given off; this seemed however to be a very crude method. The third method was to connect the delivery tube to an empty air syringe, which would measure the

  1. To investigate the rate of reaction between different concentrations of hydrochloric acid with metal ...

    The varying concentrations for the experiment should not be below 20% (0.4 molars) concentration, as the experiment grinds to a halt, as it has done here, it would take far too long to complete it. The values of the other variables are: Variable Value Size of Calcium carbonate Powder Volume

  2. Investigate the factors, which affects how quickly Calcium carbonate reacts with hydrochloric acid.

    * I started to time how much gas was being collected every 30seconds intervals-I decided to time until 240 seconds if it was necessary. * I wrote down my results and repeated the same step and with small marble chips and powdered calcium carbonate.

  1. Investigating the effect of concentration on the rateof reaction between marble chips and Hydrochloric ...

    This would improve the accuracy of the investigation. Also I would check to make sure that the experiment was set up properly with the right amounts of the chemicals and substances that I was using. I would do this to ensure my results were accurate.

  2. Rates of Reaction

    The concentration will be the independent variable in my experiment, and I will be using hydrochloric acid with different molarities in order to see what effect the concentration has on the rate of reaction. Temperature Increasing the temperature increases reaction rates because of the disproportionately large increase in the number of high-energy collisions.

  1. An Investigation to Measure the Rates of Reaction between Calcium Carbonate (Marble Chips) And ...

    believed that these measurements will give the best conditions possible to get accurate results. Collision Theory Collision theory is the activation energy which is needed for a chemical reaction to take place. Only the very fastest moving particles have enough energy to break bonds.

  2. Does the concentration of hydrochloric acid affect its rate of reaction with calcium carbonate?

    My findings are in the table below: Mass of calcium carbonate (g) Volume of hydrochloric acid solution (cm�) Time taken for 50cm� of carbon dioxide to be produced (s) 100% 20% 2.5 25 27.56 248.87 2.5 50 24.51 141.32 5 25 9.24 127.66 5 50 7.99 58.12 7.5 25 5.85

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