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

To investigate the rate of reaction I have decided to use this experiment. I am going to use Marble Chips and Hydrochloric Acid.

Extracts from this document...

Introduction

Chemistry AT1 - Rates of Reaction To investigate the rate of reaction I have decided to use this experiment. I am going to use Marble Chips and Hydrochloric Acid. I will change the concentration of the hydrochloric acid each time, and I will measure how quickly the upturned measuring tube will be filled up with carbon dioxide. Prediction I think that the higher the concentration of hydrochloric acid the faster the carbon dioxide will be given off. I think this because the higher the concentration of acid molecules the more particles available to react. Also the higher the concentration of acid particles the more chance of a particle having enough activation energy. The more particles available at any one time with enough activation energy means that in a given time more of the product is produced, or it takes a less amount of time to produce a certain amount of product, in this case Carbon Dioxide. The activation energy is the amount of energy needed to make the two particles react. ...read more.

Middle

Weigh out 10 grams of the marble chips; use the same weight each time for each of the molarities. Place the chips into the conical flask and insert the bung. As the reaction takes place bubbles should start to come out of the delivery tube into the upturned measuring cylinder. From the first bubble measure how long it takes for the upturned measuring tube to fill up with gas. Record the result and refill the upturned measuring cylinder with water, wash out the conical flask and weigh out the next lot of marble chips. Repeat the experiment but each time using a different concentration of acid 0.5M more each time until you get to 2M and as you will need 5 different concentrations you can do 1.25M or 1.75M acid aswell. You may want to repeat the experiment three times to get a more accurate average for each concentration. Fair Test - Controlling the Variables * What I will keep the same - Each time I repeat the experiment I will keep the temperature, surface area of the marble chips, amount of acid used and the amount of carbon dioxide to be collected the same. ...read more.

Conclusion

If my results had been more accurate I think the results would show the concentration of the acid and the rate of reaction to be proportional. The graph also supports my prediction. On the graph, the steeper the curve, the faster the rate of reaction. Evaluation Overall I am pleased with my results and the way the experiment was carried out. I think my results were fairly accurate and proved my hypothesis. To make the overall experiment results more accurate we repeated it three times and then took the average. If I were to do this experiment again I would probably make it more accurate by using smaller particles of marble chip so I could match up surface area and weight more accurately each time. I would like to then see if the concentration of acid is proportional to the rate of the reaction. Some other areas in the experiment that I feel I could have improved on were factors like, controlling the stopwatch. There is a lot of human error here. But the inaccuracies due to them were minor because I paid close attention to these during the experiment. ...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 project I am going to investigate rates of reaction of an indigestion ...

    3 star(s)

    Plan NB. Although this is the final plan for the actual experiments, a lot of the volumes and other measurements weren't worked out until the preliminary experiments were done (see pages 6, 7 and 8). In the preliminary experiment section I have specified the areas that I was investigating.

  2. An Experiment To Investigate The Rate Of Reaction Between Marble Chips And Hydrochloric Acid.

    This can be done in a few ways. Heating up a reaction gives the particles more energy, making more particles collide with the activation energy. Another way to speed up a reaction is to increase the concentration of reactants, which means that there are more particles to collide with each other making collisions occur more frequently.

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

    I do not have the use of a catalyst, as there isn't one for this particular reaction. Equipment: A stopwatch, a conical flask, a delivery tube, an electronic scale, rubber tube, water, basin, 3 different sizes of Marble chips (preferably - medium, small and powdered.), 1 M Hydrochloric Acid, safety goggles, measuring cylinder, Diagram Method 1.

  2. 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.

  1. Investigating the rate Of reaction between Acid and marble

    Increasing the concentration of the reactants will increase how frequent the collisions are as there will be more particles to react. Precision When choosing the apparatus to use I have to consider the precision of the experiment. I am using equipment which will ensure that my experiment is as precise as I can make it.

  2. INVESTIGATING THE RATE OF REACTION BETWEEN MARBLE CHIPS AND HYDROCHLORIC ACID

    The particles simply hit and then rebound. This animation illustrates what happens in an ineffective collision. Collisions that lead to products are called effective collisions. An effective collision must happen with a great enough speed, energy and force to break bonds in the colliding molecules. The animation illustrates an effective collision between two diatomic molecules.

  1. Experiment to investigate how the change of Hydrochloric Acid concentration affects the rate of ...

    Lab coat, goggles Boiling Tubes Stopclock Delivery Tube Thermometer Method * NB: before each experiment, ensure that the air temperature is consistent. * Using the measuring cylinder specific for the acid, measure out the specified amount of hydrochloric acid. Then, measure out the specified amount of water in the other measuring cylinder.

  2. Investigating Factors That Affect The Rate Of Reaction Between Marble Chips And Hydrochloric Acid.

    * The temperature of the acid- The reaction gets its energy from the heat and temperature it is working at. The heat gives the reaction energy; as this energy is given, the particles begin to collide, and as the temperature increases, as does the amount of energy there is to

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