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

Chemistry Equilibrium Lab

Extracts from this document...


Chemistry Equilibrium Lab Data Collection Table 1. Reaching equilibrium in 10mL of water in cylinder A and B with the same radius straw with 10mL of water Number of Transfers Volume of Water in a cylinder A (mL � 0.1 mL) Volume of Water in a cylinder B (mL � 0.1 mL) 0 10.0 0.0 1 9.8 0.2 2 9.6 0.4 3 9.4 0.5 4 9.2 0.8 5 9.0 0.9 6 8.9 1.0 7 8.6 1.3 8 8.4 1.4 9 8.2 1.7 10 8.0 1.8 11 7.8 2.0 12 7.6 2.2 13 7.4 2.5 14 7.2 2.6 15 7.0 2.8 16 6.8 3.0 17 6.6 3.2 18 6.6 3.2 19 6.6 3.2 20 6.6 3.2 21 6.5 3.4 22 6.2 3.7 23 6.0 3.8 24 5.9 4.0 25 5.6 4.2 26 5.5 4.4 27 5.2 4.6 28 5.2 5.8 29 5.0 5.0 30 5.0 5.0 31 5.0 5.0 32 5.0 5.0 Table 2. Reaching equilibrium in 10mL of water in cylinder A and B with the same radius straw with 5mL of water added to cylinder A after results from Table 1. Number of Transfers Volume of Water in a cylinder A (mL � 0.1 mL) Volume of Water in a cylinder B (mL � 0.1 mL) ...read more.


In other words, the rate of the forward reaction slows while the rate of the reverse reaction increases until they are at equal rates. After the addition of 5.0 mL in cylinder A, using Le Chatelier's principal it is possible to predict what will happen to the system. If concentration of the forward reaction increases, equilibrium move towards reverse reaction and will correct itself to re-establish equilibrium. There was 10.0 mL of water in the previous reaction and dynamic equilibrium was reached when the volumes were 5.0 mL in each cylinder. When 5.0 mL were added to cylinder A the volume went back to 10mL. We can predict that 15.0mL in total will cause equilibrium to be reached at 7.5mL as the rate of transfer is still the same. When using different radius straws, it is noticeable that the rate of transfer will differ as the thicker straw can hold more water during each transfer. Therefore the volumes in the respective cylinders will be different as the rates of reaction are not the same due to the different straws. This can be seen on Graph 2. The volume in cylinder A decreases as the volume in cylinder B increases. ...read more.


Those ends were also flattening out because of the force that was applied to transfer water. The random errors could affect our results because of inaccurately and slow down the time required to reach equilibrium. Doing the lab on separate days altered the consistency of equipment used for the experiment. The human errors t of the experiment include parallax when reading the values of water on the graduated cylinder which could cause the graph of the experiment to also in inaccurate. In addition, our fingers might not be moist all the time to maximize suction of water in the straws. These errors could increase or decrease the number of transfers needed to reach equilibrium. Improvements Improvements that could be made to this experiment include cleaning out the graduated cylinders beforehand and make sure that there are not any water droplets along the wall of the graduated cylinder so the volume of water would be accurate. We could also moisten our finger after every transfer of water to maximize the suction and volume of water with each transfer. A more careful reading of the graduated cylinder could avoid parallax and imprecise data. More trials of this experiment and doing it in one day could have been done to improve the accuracy of the results. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate 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 International Baccalaureate Chemistry essays

  1. IB chemistry revision notes

    * The Halogens (Group VII) o These elements have relatively high electronegativity values. o As you go down the group, electronegativity decreases, even thought the number of protons is increasing. * Across a Period o Electronegativity increases across the Periodic Table from left to right.

  2. Equilibrium Lab - Restoring Balance. The solubility of iodine increases ...

    the reaction tries to create more water. Making more of the product, it naturally makes more of all the products which creates CoCl42- ions (blue in color), resulting in a blue color of the system of chemicals. 6. (a) Ag+ + Cl- --> AgCl (b) The concentration of Cl- ions decreased as chlorine ions from the reactant side reacted with silver ions.

  1. Esterification Equilibrium

    Qualitative Data Qualitative Data Takes around 1 week for the mixture to reach equilibrium Placed base (NaOH) in burette and acid (HCl) in the beaker with the indicator (Phenolphthalein) Colour change when certain amount of base was titrated into the beaker (reached equilibrium)

  2. Group 4

    is ignited. A rapid reaction occurs, generating nitrogen gas (N2). This gas fills a nylon or polyamide bag at a velocity of 150 to 250 miles per hour. This process, from the initial impact of the crash to full inflation of the airbags, takes only about 40 milliseconds (Movie 1).

  1. The chemistry of Alcohols

    --> CH2 CH2 + H2O(l) In this case the ethanol is protonated by the acid. Water is then lost to form a carbocation( in which a positive charge is very briefly located on a carbon atom). Any nucleophile could now attack this carbon atom.

  2. Finding the Equilibrium Constant for the Ester Formation of Ethyl ethanoate

    Since we know that the concentration of the HCl is 3 mol.dm3 and in each solution 5cm3 of HCl was used, we can find the moles of HCl in the left over acid.

  1. Reaction Rate

    The process is the same with the only variable changing being the concentration of H2SO4. 1. Once finished, record gathered results onto laptop and return all equipment. Ensure to clean all test tubes and measuring cylinders with distilled water before returning.

  2. The chemistry of atmospheric and water pollution.

    However in the stratosphere, ozone has a very important role. It acts as a shield, preventing harmful U.V. rays from reaching earth?s surface. The ozone molecule absorbs the UV radiation from the sun and it decomposes into an oxygen molecule and an oxygen atom (radical): O3 (g)

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