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

An Investigation of the Order of the reaction of Iodine with Propanone

Extracts from this document...


Chemistry TAS Report 1. Experiment Number : 5 2. Date : 05/11/2007 3. Title : An Investigation of the Order of the reaction of Iodine with Propanone 4. Aims/Objective : To determine the order of the reaction of Iodine with Propanone. 5. Introduction / Theory: This reaction is first order with respect to propanone and first order with respect to the hydrogen ions which the reaction is catalyzed by. The order with respect to iodine can be determined by having a reaction mixture which the initial concentrations of propanone and hydrogen ions are very much larger than that of iodine. And only the concentration of the iodine is varied during the reaction and thus its effect on the reaction rate can be seen. The above reaction can be followed by monitoring the concentration of iodine. The steps, samples from the reaction mixture from time to time are removed and these are analyzed for iodine, are involved. ...read more.


0.0 5.0 10.0 15.0 2. 50.0 cm3 OF 0.02 M iodine solution was added by measuring cylinder to the propanone mixture as quickly as possible. Stop watch was started at the same time. And the content was mixed. 3. During the 5 minutes interval , 10.0 cm3 of the 0.5 M sodium hydrogencarbonate solution was measured and then added into another conical flask . 4. After 5 minutes, 10.0 cm3 of the reaction mixture was pipetted into the conical flask prepared in step 4. When it was done, the time should be noted. 5. The solution in step 4 was mixed and then titrated with 0.01 M sodium thiosulphate(VI) solution. Starch solution was used as indicator. 6. After 10, 15, 20, 25 and 30 minutes, 10 cm3 portions of the reaction mixtures in step 2 were withdrawn and the above procedure was then carried out each time. ...read more.


f) The order of reaction with respect to iodine is zero, i.e. n = 0 g) Iodine does not take part in the rate determining step of this reaction. h) The intercept of the graph with the y-axis is the initial concentration of iodine. i) The concentration of the sodium thiosulphate(VI) solution is 0.01M. 3. Group / Pair No. A B C D Gradient of graph / cm3min-1 - 0.284 - 0.255 - 0.220 - 0.180 [ The required graph please refer to Appendix 2. ] a) The gradient of the graph in Discussion 1 is directly proportional to the rate of reaction and volume of propanone solution is also directly proportional to its concentration. Since a straight line is plotted in the graph above, rate of reaction is directly proportional to the concentration of propanone. Thus, the order of the reaction with respect to propanone is 1. b) Rate equation : Rate=k[CH3COCH3]a[I2]b[H+]c Since b = 0 and [H+] = constant So, rate = k[CH3COCH3]1 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Inorganic 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 AS and A Level Inorganic Chemistry essays

  1. Peer reviewed

    Determining the concentration of acid in a given solution

    5 star(s)

    much more accurately with just a few drops of sodium carbonate solution changing the colour * Repeat the titration steps by topping up burette, ensuring it is straight, recording measurements, rinsing the conical flask, pipette 25cm3 into the conical flask and doing the reaction again, until three titres have been

  2. Peer reviewed

    Deducing the quantity of acid in a solution

    5 star(s)

    has been dissolved. * Funnel A funnel is needed to add the solution into a volumetric flask. Using a funnel is a careful way of adding a solution into a flask. The solution could accidentally spill if adding it directly from the beaker.

  1. effects Concentration and Temperature on the Rate of Reaction

    Activation Enthalpy: (1, pg 224/225) The Activation Enthalpy is described as the minimum amount of kinetic energy needed before a collision will occur between two molecules. This energy is needed for bonds in the reactants to be broken and new bonds in the products to be formed.

  2. Chemistry Iodine Clock

    - A catalyst is present Catalysts are used to speed up biological and chemical reactions. Catalysts speed up reactions by lowering the activation energy needed to a reaction to take place. By doubling one of the above for example the temperature doesn't necessarily mean that the rate of the reaction will double as most would expect.

  1. Aim To study the effect of concentration of iodide ion ...

    The concentration of iodide solution would be manipulated, acting as independent variable. Using a standard KI 1.0 mol dm-3 solution as stock solution, a dilution will be performed to produce solutions of varying concentrations (0.8, 0.4, 0.2, and 0.1 mol dm-3).

  2. Chemistry - Data Analysis

    Liquids cool down because the heat is allowed to travel in its three different ways. These are: conduction, convection and radiation. Polystyrene Cup According to my tables and graphs the water in the polystyrene cup cooled the slowest and therefore polystyrene is the best insulator of heat.

  1. Planning an investigation to determine the reactivity of HalogenoAlkanes

    Ref 1 Although the free halide ion may loosely associate with free Hydrogen ions, it will mainly bond with Silver ions, forming an opaque precipitate within the solution.

  2. Additivity of Heats of Reaction: Hesss Law Design and Data Collection

    � 0.5 (�C) � 0.5 (�C) 1 100 � 0.5mL 1.97 25 29 of H2O 2 100 � 0.5mL 1.98 21 32 of 0.50M HCl 50.0 � 0.5mL 3 of 1.0M HCl ; N/A 21 28 50.0 � 0.5mL of 1.0M NaOH Processing Data: 1.

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