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

How does the change in temperature affect the rate of reaction?

Extracts from this document...

Introduction

Temperature affecting Reaction Rates * Guiding Question: How does the change in temperature affect the rate of reaction? * Objectives: The objective of this experiment is to see how temperature affects reaction rates. * Hypothesis: We think that temperature increases the rate of reaction because the increase in temperature increases the energy of the particles and therefore overcomes faster the activation energy. * Variables: 1. Independent: Temperature (�C) 2. Dependents: Time (s) and rate of reaction (s -1) 3. Control: Volume (ml) and concentration (M) of HCl and Na2S2O3. * Procedure: a) ...read more.

Middle

f) Repeat the experiment twice for each temperature and find the average. * Materials: i. 2 measuring cylinder (50 ml) ii. Thermometer 10 �C - 110 �C iii. Chronometer iv. 2 flasks (250 mL) v. 60 ml of a 2M solution of HCl vi. 600 ml of a 0.04 M solution of Na2S2O3 * Observation: Sodium Thiosulfate ions (0.04 M) with different temperatures �C mL HCL (2M) Time to disappear of "X" (s) Average Time (s) Rate of Reaction n (s-1) 18.5 5 243 255 249 0.00401 30 5 60 46 53 0.01886 40 5 28.62 25.04 26.83 0.03727 50 5 24.38 22.46 23.42 0.04269 60 5 10.87 14 12.44 0.08038 * ...read more.

Conclusion

Some problems during the experiment were that we just have one hot plate so we loose time waiting for the other team to finish with their results. It was complicated because we couldn't have enough space to record everything that was happening because there were two groups per table. A solution to this problem is that for that specific part when we need the hot plates, we can share the data obtained in the whole table members. So we can continued the experiment at a faster rate so we can start doing more researches for the conclusion. And in this way the observations would have been more accuracy for both groups. ...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. Investigate the rate of reaction of luminol in various factors. The objective was to ...

    Add water to the area, followed by mineral absorbent. Disposal Dissolve in 5 litres of water and wash to waste. Hydrogen Peroxide (H2O2) Corrosive Any solution stronger than or equal to 5.9M (i.e., 20% or 71'vol') is corrosive and causes burns. Solutions stronger than or equal to 1.5M (i.e.

  2. The rate of reaction between sodium thiosulfate and hydrochloric acid

    This variable is controlled because 10.0ml of hydrochloric acid 2.00 M is measured by the burette. In addition, the funnels should be removed from the burette after pouring solutions to make sure no air bubble inside the burette. If present, they may lead to inaccuracies while reading the volumes.

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

    - Blue colour of copper sulphate solution begins to get paler. - Zinc electrode begins to corrode a bit. Most corrosion can be observed at 35 minutes time interval. Note* - Uncertainties: The average reaction time was �0.5s even though it did alter from interval to interval.

  2. Research Question Find the rate expression for a reaction between propanone and iodine

    * When the last drop of iodine is in the flask, start the stopwatch. * Swirl once and leave the solution to react, observing from above. * Once the solution is colorless, stop the stopwatch and record the time. * Repeat the procedure with clean apparatus using 0.0038M, 0.0076M and 0.0114M concentrations of iodine.

  1. Enthalpy Change of a Displacement Reaction

    =23.6? Absolute uncertainty=�0.5? + �0.5?=�1? % uncertainty=1?/23.6? � 100%=4% c) The heat released by the warm water Q(warm water)=m�s�?T =50g�4.18J/g?�23.6? =4.9�103J =4.9kJ % uncertainty=2% + 4%=6% (Assume that the absolute uncertainty of the specific heat of water is negligible)

  2. Research Question Will increasing the temperature (C) of the rennin enzyme affect the ...

    Research Question Will increasing the temperature (�C) of the rennin enzyme affect the rate of reaction (seconds) at which Pauls full cream milk solidifies? Hypothesis It is hypothesised that increasing the temperature of the rennin enzyme will increase the rate of the reaction at which Pauls full cream milk solidifies.

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

    The uncertainty given by the last figure on the stop watch was very inaccurate to use, therefore we calculated the reaction time instead to give a more true uncertainty. However this value has a range, so it is not necessarily accurate.

  2. Reaction Rate

    Temperature, itself, possesses the ability to change the rate of reaction and hence, it is vital to keep it controlled and constant so that the results only reflect the impact of varying concentration. * The same mass of Magnesium (Mg)

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