• 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. How duration affects the rate of electrolysis in a Voltaic Cell

    to increase in mass as the duration is increased. The following anodic reaction takes place at the zinc electrode (this is the theoretical equation):- Zn (s) --> Zn2+ (aq) + 2e- However the equation we found experimentally is:- Zn--> Zn2.09+ + 2.09e- Hence, this suggests that since the former zinc sample has more electrons to lose, it is an

  2. Rates of Reaction Lab

    (� 0.03) Volume of hydrogen gas(ml) collected at 2M hydrochloric acid Trial 1 Trial 2 Average 0.00 0.0 0.0 0.0 0.30 0.0 0.0 0.0 1.00 4.0 3.0 3.0 1.30 6.0 4.0 4.5 2.00 8.0 7.0 7.5 2.30 10.0 10.0 10.0 3.00 13.0 12.0 12.5 3.30 13.0 14.0 14.5 4.00 16.0

  1. 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.

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

    As the reaction proceeds the solution becomes increasingly acidic until all of the t -butyl chloride has reacted and all HCl that can form has formed. So we will monitor the reaction by allowing HCl formed to neutralize a predetermined amount of NaOH.

  1. 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.

  2. 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.

  1. Determining the of the Effect of the Concentration of Na2S2O3 on the Rate of ...

    Calculations To calculate the concentration of the Na2S2O3 in each trial, we use the equation: . As for both trials the volumes are all identical, we can simply calculate the concentrations for the first trial, and use them for the second.

  2. Enthalphy of reaction lab report

    = 65 °C Change in temperature (âT) = (65-27) °C => 38°C Uncertainty in change of temperature = 0.2 + 0.2 => ±0.4°C Total Heat absorbed by CuSO4 (Q)

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