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

Gcse Coursework Acid Rain Investigation

Extracts from this document...


GCSE Coursework Acid Rain Investigation Thomas English Candidate Number: 1239 Centre Number: 14388 Contents The Task Page 1 Background Knowledge Page 1 - 2 Experimental Prediction Page 2 Safety Page 3 Factors to Vary and Control Page 3 Range and Number of Observations Page 3 Accuracy of Observations Page 3 Preliminary Work Page 3 Experimental Procedure Page 4 Analysis Page 11 Evaluation Page 12 Graphs, Charts and Diagrams Scatter Graph showing Volume of Gas against time Page 5 Line Graph showing Gas given off against Time Page 6 Graph with rate calculations Page 7 Graph showing Rate against time after 20 seconds Page 8 Diagram to show Collision Theory Page 9 Raw Data Page 10 The Task Marble buildings are corroded by acid rain. The rate of corrosion is affected by various factors, the reaction can be affected by temperature, concentration, pressure, surface area and in some circumstances light can also be a factor. We have investigated the rate of corrosion on marble chips with Hydrochloric acid to find out more about acid rain erosion. Background Knowledge The principle chemicals that produce acid rain are sulphur dioxide (SO2), nitrogen oxides (NO2 ) including nitric oxide and nitrogen dioxide. Natural as well as human activities are responsible for the production of these atmospheric pollutants. Natural processes include bacterial action in soils, volcanic eruptions and degassing from oceanic plankton. ...read more.


Temperature inversions, common in urban areas, can concentrate pollutants near the ground and bring about persistent smog. The London smog of December 1952 was the most infamous of recent times. It covered a radius of 30km from the centre and current estimates of the pH of the smog range from 1.4 to 1.9 (more acidic than lemon juice!). 4,000 deaths were attributed to bronchial infections resulting from this smog. One other notable acid deposition incident in Britain included an acid mist of pH2 which covered much of the Lincolnshire and Norfolk coastline on 9th September 1989 and which was caused by heavy industry and vehicle emissions in Germany and Poland. The leaves on thousands of trees were scorched overnight and aluminium implements corroded. Such incidents, however, are not unusual. Unusually high concentrations of sulphur and nitric acid have been recorded in Athens, Mexico City, Tokyo and Los Angeles on a regular basis. Experimental Prediction The factor we will be investigating is concentration; my prediction is that if the concentration is doubled then the rate will double this means that the two are proportional. Our secondary factor is temperature; my prediction for this is that if the temperature is doubled then the rate will double. The idea behind my predictions is the collision theory, particles of the different substances, in this case marble and hydrochloric acid, move around and when they collide they react. ...read more.


The large chips were the best for the higher concentrations but were useless with the lower ones so we chose to use the medium chips. At the start of the preliminary work we agreed to take readings every 10 seconds and choose the concentrations and size of chips to fit the readings. When we chose the medium chips we saw that the most likely place for an error in our results was in the higher concentrations so we chose only a few high ones and more lower ones. Experimental Procedure: Equipment List: Gas Syringe 500ml Conical Flask Measuring Cylinder Hydrochloric acid Distilled Water Marble Chips Electric Scales Stop Clock To start with we cleared everything away and followed the precautions I outlined in the safety section. After this we collected together our equipment and set it up as shown in the diagram. Next we weighed out 10g of medium marble chips and 10ml of the acid. We added the acid into the conical flask and then my partner would add the marble chips and put the bung in the flask whilst I would start the clock. He would then read out the results every 10 seconds and I would record them in the table. We measured the results in gas given off, an alternative way of recording results would have been to have the conical flask on the scales and to record the mass loss. ...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. Marked by a teacher

    chemistry coursework

    4 star(s)

    Pour 15 cm� of hydrogen peroxide into the 50 cm� measuring cylinder. 19. Pour 10 cm� of water into the 10 cm� measuring cylinder. 20. Pour all the liquids into the 100 cm� beaker and start the stop clock.

  2. Antacid Investigation.

    When starting the next tablet you do not have to fill the burette up to 0 but take a note of where it was then calculate the difference. Saftey. Make sure all times when this experiment is being conducted that goggles are being worn.

  1. Free essay

    Chemistry Coursework

    This is because the amount of energy is likely to be bigger then the activation energy. HYPOTHESIS Based on what I have discussed above, my hypothesis is: The higher the temperature the greater the rate of reaction. PLAN In order to investigate my hypothesis I will look at the reaction

  2. Neutralisation Coursework

    Preliminary Before we began our practical our teacher performed the experiment as an example to our class. The teacher set up the equipment as shown above. She informed us of the safety precautions and then began the experiment. She used 20ml of Ammonium Hydroxide (base), placing that in the conical flask.

  1. To investigate the effects of acid rain on statues

    Volume of the solution will remain constant throughout the experiment - 30mls, though the concentration may vary. Same amount of water must be added in order to keep the acidity constant and I will keep the measuring cylinder on the bench to see whether the level of liquid are accurate or not.

  2. Acid Rain

    people believe that it is part of a cycle the earth goes through every tens of thousands of years. Conclusion The carbon found in fossil fuels like coal was stored in vegetation in the vast prehistoric forests over millions of years, the carbon in oil was formed in a similar

  1. Acid rain in Europe

    switching lights off and using energy saving appliances. This will reduce the pollution from power plants. Walking, cycling and sharing cars all reduce the pollution from vehicles. What can be done to reduce or repair the damage done by acid rain? There are many things that can be done for this.

  2. Acid Rain

    The soil is robbed of some vital things. Aluminum that is always present in the soil is freed, and the roots of trees absorb the toxic element. The trees in turn are starved and deprived of vital nutrients such as calcium and magnesium.

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