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

Rate of Reaction Between Nitric Acid and Marble Chips

Extracts from this document...


Chemistry coursework Plan Aim: To find out if concentration affects the rate of a reaction. To investigate this aim, I will find out how the concentration of Nitric acid affects the rate of reaction on marble chips by doing an experiment. Prediction: I predict that the more the concentrated the acid in the solution, the faster the rate of reaction, so if I have twice the amount of concentration I will have twice the rate. (2 X concentration = 2 X rate). I have predicted this because in gases and liquids, particles are in constant motion, and to react, the particles collide and a successful reaction happens, so if there is a higher concentration in a reaction, there are more particles to collide and react, so more chances of a successful reaction. Since there are more collisions, the reaction takes place faster. If there is twice as much concentration, there should be twice the number of particles and twice the amount of collisions, so twice the reaction rate. ...read more.


The chips need to be of length 1cm, width 0.8 cm and depth 0.25 cm. This gives roughly the same surface area. Here are the results I got: Concentration 30secs 60 secs 90 secs 2 mol 25 34 60 1 mol 14 19 37 0.5 mol 9 15 23 0.4 mol 5 11 17 0.3 mol 2 3 13 The first concentration of nitric acid will be 2.0 mol (100ml acid) as this is the bench strength, and no water. The fifth concentration was planned to be 0.3 mol but this reaction was too slow and would not give the right range so it was changed to 0.4 mol (20ml acid). So now the five concentrations will be: 2.0 mol (100ml acid, no water), 2g calcium carbonate 1.6 mol (80ml acid, 20 ml water), 2g calcium carbonate 1.2 mol (60ml acid, 40 ml water), 2g calcium carbonate 0.8 mol (40 ml acid, 60 ml water), 2g calcium carbonate 0.4 mol (20ml acid, 80 ml water), 2g calcium carbonate I will measure each experiment for 30 seconds, 60 seconds and then 90 seconds, because just doing ...read more.


The other variables I need to control are: The temperature - I will control this by using a thermometer. If I don't control this the rate will increase or decrease and will affect my results making my experiment unfair. Other catalysts - I will make sure no other substances get into my experiment. If they do the rate could increase and make the experiment unfair. Surface area - I will measure each marble chip's dimensions to get the same area. I could also use powder to keep it the same. If some chips have a larger surface area than others the rate of reaction will be faster, even if the concentration is the same so again my experiment will be unfair and the results wrong. I will also need to be accurate, so be very careful and do things 3 times for accuracy. I will need to set up the apparatus correctly and make sure it is the same for each experiment I do. The bung needs to be securely fastened on the conical flask so as to let no carbon dioxide leaks out, and the gas syringe held up properly using the retort stand. Jasbir Golan 10.5 ...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. To investigate the effect of the concentration of nitric acid on the rate of ...

    At a higher temperature there will be more particles colliding with sufficient energy to make the reaction happen at a much more rapid rate. This initial energy is known as activation energy and it is needed to break the initial bonds that exist between some of the reactant particles.

  2. Chemistry Cwk Rates of reaction: Investigating One Factor Which Affects How Fast Calcium Carbonate ...

    - - - - - 75 76 75.5 200 - - - - - - 79 78 78.5 205 - - - - - - 81 82 81.5 210 - - - - - - 83 83 83 215 - - - - - - 85 86 85.5 220 -

  1. Investigating the rate Of reaction between Acid and marble

    Place the 2 grams of marble chips into the flask containing the acid, as soon as this is done start the stopwatch. 7. Record the weight at intervals of 30 seconds for 5 minutes. 8. Repeat steps 1-7 2 more times to get three sets of results for increased reliability.

  2. The rate of reaction between Nitric acid and marble chips.

    This obviously increases the number of collisions. Catalysts lower the activation energy of reactions, making it easier for them to happen. This means a lower temperature can be used. In addition, this helps reduce costs in industrial reactions. Faster collisions are only caused by increasing the temperature.

  1. To find if changing the concentration of an acid will increase or decrease the ...

    Preliminary Work The main aim of preliminary work is to find the appropriate apparatus and find the correct materials which will be used throughout the experiment. It is important to collect a certain amount of data, but not too much off data.

  2. What affects the Rate of Reaction when Calcium carbonate is dissolved in nitric acid?

    My group and me decided to do the change of the concentration because we think it would be better and we would see clear differences. We have to observe the time and gas given off and get as much results as possible.

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