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

Design- Rate of Reaction

Extracts from this document...

Introduction

Chemistry Laboratory Report To Study the Factors Affecting the Rate of Reaction Design Nikita Bansal B.D.Somani International School Chemistry Standard Level Candidate Number- 002602015 Session: May 2010 AIM To study the factors affecting the rate of reaction RESEARCH QUESTION What is the effect of changing the concentration of sodium thiosulphate by 5cm3 upon the rate of reaction in the reaction between sodium thiosulphate and hydrochloric acid keeping volume of acid, temperature, number of stirs, pressure and surface area constant? BACKGROUND INFORMATION The rate of reaction is often judged by the Collision Theory. This theory created by Max Trautz and William Lewis qualitatively explains how chemical reactions occur and why reaction rates differ for different reactions. This theory is based on the idea that the reactants must collide in order for any reaction to take place. Increasing the concentration of reactants causes an increase in the frequency of collisions, thus increasing the rate of reaction. ...read more.

Middle

Room Temperature (to be kept constant 3. Pressure 4. Surface Area 5. Number of stirs APPARATUS CHEMICALS 1. 0.15 M Sodium Thiosulphate solution (23.7 g Na2S2O3 dissolved in deionized or distilled water to make one liter of solution) 2. 6 M HCl solution (dilute 500 dm3 concentrated HCl solution to one liter with distilled or deionized water) EQUIPMENT 1. 0.250 dm3 beakers 2. Stirring rods 3. 0.025 dm3 graduated cylinder 4. Clock (which can measure in seconds) 5. White Paper 6. Black/Dark coloured marker 6. The level of sodium thiosulphate and hydrochloric acid in the beaker 7. The room temperature and pressure (as these are other factors which affect the rate of reaction.) PROCEDURE 1. Obtain five 0.250 dm3 beakers, about 0.03 dm3 of hydrochloric acid solution, and about 0.080 dm3 of sodium thiosulphate solution. Label the beakers from 1 to 5. Add the amounts of sodium thiosulfate solution and distilled or deionized water to each cup indicated in the following table: Beaker Number Volume of Sodium Thiosulphate(cm3) ...read more.

Conclusion

7. Make a graph of your data by plotting the time (in sec) for each reaction on the y-axis against the volume (in dm3) of sodium thiosulfate stock solution on the x-axis. 8. Calculate the relative rate of each reaction by taking the reciprocal of each time measurement. Record these results in your data table. 9. Make a second graph by plotting the relative rate of each reaction on the y-axis against the volume of sodium thiosulfate solution on the x-axis. PRECAUTIONS 1. Concentrated solution of HC1 will burn skin or damage clothing; avoid skin contact with acid. 2. Reactions should be carried out in a hood or well-ventilated room. 3. Some poisonous SO2(g) is produced. Students should be cautioned against leaning over reaction vessel too closely as they observe the "x" under the beaker. 4. Goggles should be worn throughout the experiment. DATA TABLE Beaker Number Volume of Sodium Thiosuphate(cm3) Volume of Water(cm3) Time taken for reaction to take place(s) 1 25 0.0 2 20 5.0 3 15 10 4 10 15 5 5.0 20 ?? ?? ?? ?? Nikita Bansal BD Somani International School ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Organic Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Here's what a teacher thought of this essay


This is a very well written laboratory report. If complete it would gain high marks. The limiting factor here is that it is incomplete. There are improvements suggested throughout and additional guidance for the missing content.

Marked by teacher Cornelia Bruce 18/04/2013

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 GCSE Organic Chemistry essays

  1. Titration experiment - write up

    by 1000 to convert the units from cm� to mol dm-�, I will then divide by 4 (because 1000/250 = 4) to get the exact amount of anhydrous sodium carbonate. The Mr of Na2CO3: Na = 23 x 2 = 46 C = 2 x 1 = 12 O =

  2. The Combustion of Alcohols and the factors affecting these reactions

    O-H: 1 � 464 = 464 Total: + 4473 kJ/mole Bonds Making (-) 2 � C=O: 2 � 805 = 1610 4 � O-H: 4 � 464 = 1856 Total: - 3466 kJ/mole ?H = + 3269 - 3466 = - 1007 kJ/mole Ethanol Equation: Structure: Bonds Breaking (+)

  1. The Decomposition of Sodium Hydrogen Carbonate

    Make sure that you measure the masses of the crucible every time, the five minutes are over. 11. When the mass of the crucible stops decreasing then you know that the reaction is complete. 12. In order to find out the actual product, you should first calculate atomic mass of

  2. Methanol - Bond Energy Calculations

    C - C - C - C - O - H O = O H H H H H = H - C x 22 (435) C - O x 2 (358) O - H x 2 (464) O = O x 15 (497) C - C x 8 (347)

  1. GCSE Chemistry Coursework-Burning Fuels Investigation

    Therefore the results from the experiment are anomalous results. So these results are not valid for the use of any concluding. EVALUATION: There are many reasons why this experiment created anomalous results. Mostly they were because of lack of equality of the equipment and methods used in this investigation.

  2. Comparing the enthalpy changes of combustion of different alcohols.

    If the bond breaking value is bigger than the bond forming value then the reaction is exothermic. If the bond breaking value is smaller than the bond forming value then the reaction is endothermic. Once this has happened new bonds form to produce the new products, which for combustion is carbon dioxide and water.

  1. Benzoic acid lab report

    During both of vacuum filtrations, some of the solid may be gotten through the filter. When using the separatory funnel, some of the organic layer may have drained through, or not the entire aqueous layer was drained through Also when using the separatory funnel, it is possible to lose some

  2. Esters. Esters are formed from an alcohol and carboxylic acid; this is an ...

    A major use of methyl acetate is as a volatile low toxicity solvent in glues, paints, and nail polish removers. Methanol + ethanoic acid = methyl ethanoate + water.

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