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

    (Different time intervals would result in a different mass change) This can be calculated simply by doing the following: Mass change = final mass - initial mass Due note however that this formula can only be used for calculating the mass change taking place at the cathode (copper electrode where reduction takes place).

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

    Wash out the flask thoroughly. 9. Repeat the experiment using other volumes of sodium thiosulfate and water in the table next page. Volume of sodium thiosulfate 0.10 M (� 0.0500 ml) Volume of water (� 0.0500 ml) Volume of hydrochloric acid (� 0.0500 ml)

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

    Measure out 5ml of the 0.0142M solution of Iodine in the 10ml measuring cylinder. * Place the clean conical flask on the white tile and keep the stopwatch at the ready. Firstly, add the 35ml propanone, followed by the 10ml sulfuric acid and finally the 5ml 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. Factors Affecting Rate of Reaction

    The bigger the area of the solid surface, the more particles can collide with it per second, and the faster the reaction rate is. During the experiment, when the crushed tablet was poured in the water, the lid was not put on firmly, leaving a space for air to escape the canister.

  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. Reaction Rate

    * The same climatic conditions present around the experiment. The climatic conditions, in particular temperature will remain the same throughout the experiment to prevent natural processes and disturbance from impacting the experiment. These will be kept the same as no windows will be opened or closed and the air conditioning will not change in temperature or switch on/off after the experiment has started.

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