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

acid rain

Extracts from this document...

Introduction

What effect does increasing concentrations of Acid Rain have on the rate buildings made of limestone decay/dissolve? In our experiment we aimed to find out the effect of increasing concentrations of acid rain has on the rate of limestone dissolving. To do this we had to learn a bit of knowledge about acid rain and how it was formed. I learnt the process that results in the formation of acid rain generally begins with emissions into the atmosphere, which consists of gasses like sulphur dioxide and nitrogen oxide. These gases are released by automobiles, certain industrial operations (normally smelting and refining) and electrical stations which burn fuels like coal and oil. The gases combine with water vapour in clouds to form sulphuric and nitric acids. When precipitation falls from the clouds it is highly acidic, which normally consists of PH levels from 6 and lower. This can cause acidification of lakes and streams and contributes to the damage of trees at high elevations as it causes slower growth, injury, or death of forests. In addition, it has a major impact on old buildings which are made of softer and less sturdy materials causing them to erode and finally collapse if the acid rain puts too much strain on them. ...read more.

Middle

We repeated this whole process of getting the marble chips and acid, emptying and cleaning the equipment 3 times for every concentration of acid until we got a total of 18 successful results. We made this test as fair as possible by using the same amount of acid and marble chips each test, using roughly the same amount of water in the bath and cylinder, running it for the same amount of time and finally by cleaning the whole set of equipment every time. In addition we also made sure we kept our safety at high priority over everything and by doing this we made sure we wore safety glasses, slowly moving around when we had acid in our hands and just concentrating on everything we done. Background information Concentration is one aspect of the collision theory. The theory is that the higher the concentration of the reactants, the closer the particles are together and this means they will collide more often and this will speed up the rate of reaction. During this experiment we will discover whether this theory is correct. Activation energy is the amount of energy that must be overcome in order for a chemical reaction to take place, for it to activate. ...read more.

Conclusion

Luckily we did not get any outliers apart from the unsuccessful results at the beginning of our experiment. In addition I had confidence in our results because the equipment we used we kept it clean and made it very fair for each experiment by using the same instruments for every test, also none of it broke or had faults which would have given us unreliable results and would of disrupted our whole experiment. So to conclude that our results were reliable I can say that they are because of a few main factors which are that the equipment worked perfectly and did not have any faults, we made sure the whole test was fair from many ways (collected all the results in one day, changed the water each time, same amount of time on each) the other main factor was that the range bars were not too big which helps secure the confidence in our results. Conclusion To finally conclude this, from the background knowledge of collision theory and from my reliable set of result we got, I can say that the more concentrated the acid is, the faster and larger the reaction will be. ?? ?? ?? ?? Tom Mooney 10WT - Chemistry Coursework 30/06/2009 ...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 Changing Materials - The Earth and its Atmosphere 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 Changing Materials - The Earth and its Atmosphere essays

  1. What is Acid Rain? What are the effects of acid rain?

    In the air at low concentrations naturally Sulphur dioxide can be found due to volcanoes and forest fires. This can be a means of breathing difficulties, when sulphur dioxide reacts with moisture it can cause acid rain and it also can be very toxic to plants This gas is can also emitted into the atmosphere by natural means.

  2. Human Impact On the Environment

    keep the heat as there is no sun to provide heat and light. Without the greenhouse effect many animals, plants and people will not be able to survive. Most scientists believe that main cause of global warming is the green house gasses that are produced.

  1. Are we making the best use of crude oil?

    The graph also shows evidence that the price is influenced by demand. The prices sky-rocket whenever there is conflict and has sunk down during the financial crisis. (Source 3) Proven reserves of crude oil (in thousands of million barrels) Area Year 1987 1997 2007 North America 101 89 69 South

  2. Is an increase in traffic pollution the

    However the asthma study states that they carried out the investigation during a period of time at which the four 'high-zone' study area's exceeded the federal ozone health standard by an average of about 50 days per year', 'such high pollution levels no longer occur anywhere in the United States.'

  1. Investigating the effect of the temperature of hydrochloric acid on its rate of reaction ...

    This would give a higher rate of reaction. Use the same concentration of HCl in each experiment. Amount of CaCO3 Increasing the amount of calcium carbonate could mean that the hydrochloric acid particles are more likely to collide with some CaCO3, increasing the number of successful reactions/unit of time, increasing the rate of reaction.

  2. Should the UK build more Nuclear Power Stations?

    to clean up hazardous nuclear waste at sites around the UK. More than95% of the radioactive waste comes from nuclear power stations, while the rest comes from medical use, industry and scientific research. They call it the UK's 'nuclear legacy' The NDA will spend around �1,000 million each year, for

  1. Acid Rain

    Some areas in the U.S. where acid rain is most common include the New York Adirondacks, mid-Appalachian highlands, and the upper Midwest. Canada shows an even greater threat with half of its acid deposition caused by a large amount of metal smelting industries in Ontario and the other half attributed to pollution from combustion in U.S.

  2. Acid Rain and Its Effects

    Here are the summarized characteristics that make acid rain, acid rain. * It must be acidic * There must be (an) un-reacted gas(es) present * It must be an acid dilute in water * It must be corrosive The last point there shows that acid rain is capable of damaging buildings and life-forms.

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