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

Rates of Reaction Coursework.

Extracts from this document...


Rates of Reaction Coursework Plan During this investigation I am going to add dilute hydrochloric acid to calcium carbonate (powder), but vary the volume of acid. I am also going to collect the amount of gas given off, and to record the results (time) it takes for the gas to finally disappear. After every 10 seconds, I am going to record how much gas is given off, by recording the water level, from the measuring cylinder. To make sure the investigation is a success, I am intending to vary the amount of dilute hydrochloric acid being used, for example, using the concentration of 1 Molar then 0.8 Molar. I am also going to vary the volume of Hydrochloric acid and the volume of water used. Grid below explains in further detail: Concentration/M Volume of HCl/cm3 Volume of water/cm3 1 50 0 0.8 40 10 0.6 30 20 0.4 20 30 0.2 10 40 I am also going to measure approximately 3 grams of Calcium powder, for every experiment trail and for every varied concentration. Prediction I think that during the experiment, the less concentrated the dilute hydrochloric acid is the longer it will take for the reaction to take place. ...read more.


into a small measuring flask. Then we had to fill a box with water, which was able to fill up a large measuring flask. The measuring flask was then tipped over into the box, full of water so that no water was escaping. We then, added the calcium carbonate (powder), used the thistle funnel, plugged it onto the conical flask and ensured that the rubber part was tightly pushed down. We then were ready to add the last ingredient, which was the hydrochloric acid. With the stop clock in our hands we indicated when it was suitable to start. Once the hydrochloric acid made contact with the powder, we immediately started the timer. After every 10 seconds we counted how much gas was given off, and looked at the measuring flask to see the amount of water left. Fair Test To make sure the experiment was as fair as possible I had to repeat it at least 3 times in order to make sure everything was okay. I am also going to make sure that it is fair by getting an average, which was adding all the times, and dividing them by the number of results. ...read more.


When I decided to add the Calcium carbonate powder some of it was sticking to the bottom of the flask because the flask was wet. If I was to the experiment again, I would make sure that I clean the flask properly, ensuring that the powder wouldn't stick. Also the small rubber tube from the thistle funnel wasn't straight at all times and wasn't touching the flask. Since it wasn't straight this resulted in no reaction taken place, making our results not being fair. To make sure that this problem was resolved we had to make sure that the rubber tube was kind of bent, and that it made contact with the flask. The process of adding the powder into the flask may have been a difficulty since all the powder (3 grams) didn't actually enter the flask, which varied my reading. The conditions of different days may have also differed my reading, since it may have been hot one day, and cold the other. If I was to the do the whole experiment again, I will ensure that I try to do everything in 1 day, and to use the same amount of hydrochloric acid, since the acid may have been different from time to time. Overall the experiment was okay, but the readings may have been different because of the problems we encountered. ?? ?? ?? ?? 08/05/2007 ...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)

    If the temperature was low then there will be fewer collisions per second therefore the rate of reaction will be slower. There will be less collisions per second as the particles colliding will have less activation energy needed to break the initial bonds therefore the reaction will be slower.

  2. How much Iron (II) in 100 grams of Spinach Oleracea?

    predict which chemical is the oxidising agent and which is the reducing agent. 5C2O42- (aq) + 2MnO4- (aq) +16H+ (aq) 10CO2 (g) + 8H2O (l) + 2Mn2+(aq) The half reaction involving a loss of electrons is known as the oxidation reaction and the reaction that involves a gain in electrons is known as a reduction reaction (6)

  1. Neutralisation Coursework

    * Place beaker underneath the burette. * Open the tap and drain the acid. * Repeat a few times. * Close the tap and fill the burette to just above the 0cm mark with Hydrochloric Acid. * Remove the funnel * Make sure there are no bubbles in the burette.

  2. An Investigation to Measure the Rates of Reaction between Calcium Carbonate (Marble Chips) And ...

    In the diagram below there are two different concentrations. On the right there is a less concentrated solution to the right. Because of this there are now more hydrochloric acid particles in the solution to hit into the calcium chloride particles.

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