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

The aim of this experiment is to find out how different variables affect the rate at which the reaction will take place at between marble chips (CaCO) and hydrochloric acid (HCl).

Extracts from this document...

Introduction

Emma Richards Rate Of Reaction Between Marble Chips + Acid Aim: The aim of this experiment is to find out how different variables affect the rate at which the reaction will take place at between marble chips (CaCO) and hydrochloric acid (HCl). There are many variables that affect the rate of reaction such as; * Temperature * Concentration (pressure for gasses) * Catalysts * Surface Area In my experiment I will be testing how the change of concentration of hydrochloric acid makes an effect and changes the speed of the reaction. The reaction that will take place is: Hydrochloric Acid + Calcium Carbonate Calcium Chloride + Water + Carbon Dioxide (HCl) + (CaCO3) (CaCl2) + (H 2O) + (CO2) Hypothesis The more concentrated the acid is then the quicker the reaction will take place, because there will be more HCL particles than water particles for the marble chips to collide with and therefore react. More collisions between the two reactants (HCl and CaCO) will take place resulting in a quicker time for the reaction. I feel this is also true because of the research I did on the internet people that had found to have done this experiment 10 cm of HCl and 30g of marble chips and timed there experiment every 10 seconds. I feel this is also true because of a similar experiment I did but testing for surface area and I feel the results would be similar. ...read more.

Middle

The reaction will be faster by the catalysts will not be used up during the reaction. Then the activation energy is lower not my energy is needed to make the reaction successful. Surface Area: Solid reactants like marble chips are affected by surface area. The larger the surface area, the more collisions will take place. This will increase the rate of reaction and decrease the time taken. Safety: For safety I will where safety goggles and I will try not to spill any of the acid. I will also push my chair and bag under the table. I will also check that the equipment is safe to use. Apparatus 1. Hydrochloric acid 2. Water 3. Calcium carbonate chips 4. Conical flask 5. Glass capillary 6. Syringe 7. Rubber bung 8. Spatula 9. Stand 10. Clamp 11. Measuring cylinder 12. Stopwatch 13. Top pan balance (measure marble chips) Method Once the aperatus has been set up as shown above, 50 cm� of the HCl acid solution will be mearsure using a mearsuring cylinder. This will be poured in to a conicle flask. I will then mearsure out 2g of CaCO chips using a top pan balance. This will be put in to the conicle flask and the rubber bung with the syringe attached willo be put over it immediately afterwards. I will then start the stop clock. I will check my experiment every 30 seconds I will record how much gas is produced and record it. ...read more.

Conclusion

The prediction for this is the higher the temperature the quicker the rate of reaction. This is because the particles have more energy, so they will move faster. This will result in the particles colliding move frequently and increasing the speed of the reaction. Catalysts: They will reduce the activation energy so in return this will make more successful collision. The reaction will be faster by the catalysts will not be used up during the reaction. Then the activation energy is lower not my energy is needed to make the reaction successful. Surface Area: Solid reactants like marble chips are affected by surface area. The larger the surface area, the more collisions will take place. This will increase the rate of reaction and decrease the time taken. My prediction was accurate. As I said, the higher the concentration, the faster the reaction. I think that my prediction and my results match perfectly. In conclusion, I think that the experiments worked well in some places, and worst in others. The 0.25 molar is very weak and has little gas given off. This is also the same for the 0.5 and 1 molars. The 2 and 3 molar are very strong and give of a lot more gas. This backs up my prediction and my conclusion that the stronger the concentration the more gas is given off and the quicker the rate of reaction. Rates Of Reaction Graph ...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

    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

  2. Marked by a teacher

    The Effect of Concentration on the Rate of Reaction between Hydrochloric Acid and Calcium ...

    3 star(s)

    reacting in 50cm3 of hydrochloric acid and recording the amount of carbon dioxide to be produced over a period of time. These results were compared, showing that the higher surface area from the small chips produced the highest rate of reaction.

  1. The aim of the experiment is to find out the rate of reaction at ...

    I will then find the average of the temperatures. The reaction will be measured using a stop clock in seconds. The amount of gas produced could also be measured. The gas produced will be carbon dioxide, and it could be measured using a syringe.

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

    Total time for reaction Average Rate of reaction Medium (9-12mm) 100 cm3 480 sec 100-480=0.20 cm3 /s Small (2-4mm) 100 cm3 255 sec 100-255=0.39 cm3 /s Powdered 65 cm3 195 sec 65-195= 0.33 cm3 /s Conclusion: From this preliminary experiment I have found that: * 4g of small size

  1. Chemistry Rates Of Reaction Marble chips and Hydrochloric acid

    I know that an acid + alkali = neutralisation, when we neutralise something it tends to fizz and give of bubbles. The hydrochloric acid and the marble chip will collide and I think bubbles of CO2 will be given off.

  2. Null hypothesis:The type of sugar will have no effect on the rate of respiration ...

    the rate of reaction and may reduce the validity of my results, I will control this by weighing my substrate before it is added in the experiment Yeast This is one of the vital constants in my experiment so I am going to weigh it out exactly using sensitive scales

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

    I believe this to be so, because it reduces the need to heat up the acid which is firstly, because hot acid is hazardous and dangerous, and secondly, it can be very inaccurate, as it requires a water bath to be set up, and then reading off a thermometer, which will increase the risk of human error.

  2. Investigating the rate Of reaction between Acid and marble

    particles, as there are less acid particles they would not react with the marble as quickly thus a slower rate of reaction. I believe this as when I double the concentration of the acid the numbers of hydrogen ions will also double this will also lead to an increase in

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