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

Lab report: the effect of temperature on the rate of reaction

Extracts from this document...


The effect of the temperature on the rate of the reaction Aim: to develop a method for studying how an increase in temperature affects the rate of a reaction Materials: digital thermometer, boiling tubes, test tubes, 3 burettes, potassium iodide solution, sodium thiosulphate solution, freshly made starch solution, stopwatch, heater Independent variable: the temperature of the water in the beakers Dependent variable: time of the reaction Controlled variables: the volumes of sodium thiosulphate, potassium peroxodisulphate, starch solution, potassium iodide, the mass of the beaker, the mass of the test tube Procedure 1. ...read more.


into different burettes. 2. Add 3cm3 of 0.2mol dm-3 of potassium iodide solution(KI), 4cm3 of 0.1mol-3 potassium peroxodisulphate(K2S2O3) solution, 2cm3 of 0.01mol-3 sodium thiosulphate (Na2S2O3) into a test tube. 3. Add 150cm3 of water into a 250cm3 beaker. 4. Heat the water until it reaches 20�C. 5. Put the test tube into the water in the beaker. 6. ...read more.


Time taken (min) 20 21.60 22.17 30 12.60 12.45 40 8.57 8.42 50 5.50 6.32 60 3.02 2.07 70 2.07 2.90 Measuring the rates of the reactions To measure the rates of the reactions in these experiments, this equation is used: Rate of reaction= temperature change/ time taken Temperature (�C) experiment 1 experiment2 20 0.926 0.902 30 2.381 2.410 40 4.667 4.751 50 9.091 7.911 60 19.868 28.986 70 33.816 24.138 Conclusion As the temperature increases, the rate of the change of the color of the solution increases. This shows that the rate of the reaction increases. ...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. Rate of Reaction sodium thiosulphate

    + �0.5 (s) + �0.2 (cm3) = �0.9 �0.4 (cm3) from measuring cylinder and pipette �0.5 (s) from stopwatch Errors: * Human error in not being able to determine when reaction has fully stopped. * The stopwatch hasn't started on time when the two solutions were mixed.

  2. How Temperature affects the Rate of Dissolving Lab

    Add 25 grams of sugar into the water after it reaches 40?, use another stopwatch to measure the time it takes to completely dissolve. Stir every 5 minutes. (Don't forget to watch the first beaker!) 6. While the others are dissolving, measure another 200ml of tap water and pour

  1. Rates of Reaction Lab

    Also, use the 100 mL measuring cylinders with precision to ensure that the volume of hydrochloric acid used each time is constant for all three concentrations. Data Collection and Processing (DCP) Results Volume of H2 collected every 30 seconds of the reaction Time (mins) (� 0.03) Volume of hydrogen gas(ml)

  2. Indicator Lab Report - investigating acid-base reactions

    Methyl orange was used for weak acid + weak base experiments and strong acid + strong base experiments. The anticipated pH jump for these experiments were estimated to be between 1 and 2.5 for the strong acid + weak base experiment and 2.5 to 4.5 for weak acid +weak base experiments.

  1. titration experiment report

    orange as an indicator because we were working with a strong acid and a weak base. On the other hand, we used different indicator in part 2, since we were dealing with a strong acid with strong base. Processed data: Equations used Part 1: > n()

  2. Change of Potential Difference in Voltaic Cells Lab Report

    Place the Cu electrode into the copper solution (beaker A) and the Zn electrode into the zinc solution (beaker B). 2. Use the insulated connecting wires to connect each metal electrode to on ending of the voltmeter, the negative to Zn electrode and the positive to the Cu electrode. 3.

  1. Chemistry extended essay - investigate the effect of 2-bromo-2-methyl propane concentration and temperature of ...

    intermediate in a total reaction, the over all rate of reaction is determined by the transition state of highest energy in the sequence, so the rate determining step is the rate determining step for both the Sn1 and E1 for t - butyl chloride.

  2. IB Chemistry Lab Design - compare the effect of temperature on the concentrations of ...

    This is titrated against a solution of sodium thiosulfate of known concentration. The volume of thiosulfate used is noted. Then, the Vitamin A solutions are added to a similar solution of dichromate, KI and starch, and titration is carried out with thiosulfate.

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