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

Find out if the concentration of hydrochloric acid will increase the rate of reaction between calcium carbonate and hydrochloric acid.

Extracts from this document...

Introduction

Aim: I am trying to find out if the concentration oh hydrochloric acid will increase the rate of reaction between calcium carbonate and hydrochloric acid. Prediction: I suspect that the stronger the hydrochloric acid I use, the faster the reaction will be, more gas will be given off and more collision between particles will take place. I also think that as I dilute the acid the rate of reaction will decrease, less collision between particles will take place and as a result, less gas will be given off. I believe this because the higher the concentration of the acid, the more ions there will be. Therefore more collision between the calcium carbonate (marble chips) and the hydrochloric acid will take place. The acid particles will collide with the marble chippings causing the reaction to take place faster. If you further double the strength of the acid you will double the amount of ions. This will then double the speed of the reaction. Each time you increase the concentration of the hydrochloric acid the speed increases in direct proportions. Plan: I intend to carry out the experiment using the apparatus illustrated below: I chose this apparatus as I found it gave the most accurate reading as opposed to the gas collection kit. ...read more.

Middle

Apparatus: * Bung * Conical flask * Retort stand * Clamp * Gas syringe * Calcium carbonate (marble chips) * Hydrochloric acid * Stop Clock Results: * First Experiment Gas given off by (25cm�) 2 molar acid 1.5 molar acid 1 molar acid 0.5 molar acid 0 seconds 0 0 0 0 10 seconds 65 63 18 17 20 seconds 84 95 35 25 30 seconds 94 115 50 29 40 seconds 114 135 64 32 50 seconds 133 142 75 39 60 seconds 152 165 85 40 70 seconds 171 190 95 42 80 seconds 190 200 105 49 90 seconds 209 210 113 - * Second Experiment Gas given off by (25cm�) 2 molar acid 1.5 molar acid 1 molar acid 0.5 molar acid 0 seconds 0 0 0 0. 10 seconds 63 45 33 32 20 seconds 87 65 47 46 30 seconds 100 80 50 50 40 seconds 117 93 63 60 50 seconds 130 105 70 63 60 seconds 142 111 75 65 70 seconds 154 118 79 66 80 seconds 460 124 82 69 90 seconds 175 127 85 72 * Third Experiment Gas given off by (25cm�) ...read more.

Conclusion

When the concentration of acid was doubled, as was the acid particles, this meant that there were more acid particles and that meant more collision took place Error and improvement: My results were inconsistent throughout all three experiments. One result could be 100 cm� And the next one could be 150cm�. E.g. Volume of gas given off (cm�) 2 molar 1.5 molar 1 molar 0.5 molar Experiment 1 After 50 seconds 133 142 75 39 Experiment 2 After 50 seconds 130 105 70 63 Experiment 3 After 50 seconds 130 110 70 45 In some cases in my investigation my results were very inconsistent. One way that I could improve my results would be to use a better gas syringe; I think that after many uses they would begin to stick, which could manipulate the results. Another improvement I would make would be to carry out all three experiments in the same day using the very same bottle of acid. I think that using different bottles of acid, although they are marked as the same strength, could be slightly more concentrated than other ones as they are mixed in school, this would affect the results. Craig Lamont ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Physical 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 AS and A Level Physical Chemistry essays

  1. Peer reviewed

    Enthalpy of formation of calcium carbonate

    4 star(s)

    =(27.174 +30.685)/2 =-29.080kJ mol-1 3. Draw an energy-cycle linking Equations 1, 2 and 3 together, you must include reactions that had not been performed in the experiment. 2H+(aq.) +Ca(s) + C(s) + 3/2 O2(g) CaCO3(s) + 2H+(aq.) ?Hx ?Hy Ca2+(aq.) + H2(g) + C(s) + 3/2 O2(g) Ca2+(aq.) + CO2(g)

  2. Investigating the rate of reaction between peroxydisulphate(VI) ions and iodide ions

    The majority of particles, however, will be moving at a speed very close to the average. The Maxwell-Boltzmann distribution shows how the speeds (and hence the energies) of a mixture of moving particles varies at a particular temperature. This gives a range of different kinetic energies.

  1. Free essay

    Experiment. Is the order of reaction affected if the acid is monoprotic or diprotic?

    As stated on all above calculations the reactant that will be in excess is the magnesium metal, this is because I do not want it to be a limiting factor in the experiment. Controlled variable During my investigation, I will have to take in account that as well as changing

  2. Investigating how concentration affects rate of reaction

    Figure 4 shows the change when the temperature is increased by 10K. It shows that there is still a wide range of energies but now there are more particles with a higher kinetic energy. At the higher temperature of 310 Kelvin there are many more molecules which have reached the activation enthalpy level than at 300K.

  1. Investigating the rate of reaction between marble chips (calcium carbonate) and hydrochloric acid.

    Step3: Measure 15ml of acid with concentration 2.5M with a test tube, and then pour it all into the conical flask. Step4: Get the stopwatch ready Step5: Put the measured marble chips into the conical flask with measured acid in it, and then close with the stopper from the gas syringe.

  2. Reaction between calcium carbonate and hydrochloric acid

    This is how I will conduct the experiment. I will set up the apparatus as shown below. I will pour in the Hydrochloric acid and get someone else to start the stopwatch for me, next I will measure the volume of Co2 produced at intervals of one minute until ten minutes have passed.

  1. Neutralization investigation

    Although this is slightly inaccurate as this means I am not taking into account the small amount of acid either side of the sag, it is the most accurate way I can think of, and as long as I am consistent in my measurements it should not lead to inaccuracy in my results.

  2. How do we make Magnesium and Hydrochloric acid react faster?

    * Rubber bun * Measuring cylinder * Ruler * Safety goggles * Thermometer * Bench Mat Diagram: Method: 1. Gather all apparatus 2. Make a results table 3. Throughout the experiment, a pair of goggles must be worn, as there is a lot of handling of acids.

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