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

Rates Of Reaction.

Extracts from this document...


Chemistry; Rates Of Reaction Plan: This experiment is planned to investigate the rate of reaction when mixing Copper sulphate (CuSO4) with Zinc powder (Zn). My plan is to see what happens before, during and after the reaction takes place. I will need the following equipment to carry out this investigation: > A 50ml marked measuring tube > A digital precision scale > 600ml of copper sulphate > A digital thermometer > A pot of Zinc powder > A sandpaper (to sand the Copper sulphate off the thermometer) > A pen and a paper (to record results.) > A beaker (to mix the elements) > A stirring stick For the first preliminary results chart, the variable will be the amount of Zinc powder but the copper sulphate solution will be 30 ml. Step-by-step: In order to get satisfactory results out of this experiment, you'll have to follow carefully the step-by-step instructions: i. Put a light plastic recipient on a digital precision scale. ...read more.


The result stagnates because of the fact that there aren't enough copper sulphate molecules, which can't react with the overdose of zinc powder. This is shown by the graph above. The zinc ratio is getting higher than the CuSO4. In the next result chart the quantity of zinc powder will be 6g and the variable will be the amount of copper sulphate to see if the results will rise or lower. Quantity of Zinc powder (g) Amount of copper sulphate (ml) Temperature (degrees C) Time (secs) 6 30 67 60 6 60 65 60 6 90 56 60 6 120 51.6 60 The second chart of results shows that the more copper sulphate solution is added with only 6g of Zinc powder, the temperature falls very slowly, bit by bit. This time, the copper sulphate ratio is getting bigger than the Zinc. Prediction: I believe that as the amount of zinc powder increases, the temperature after the reaction will be greater, therefore the temperature change will be greater. ...read more.


I have also learned from the preliminaries that as you keep the zinc amount level and vary the amount of Copper Sulphate, the more Copper Sulphate there is, the less the temperature after. I think this is because there is to much Copper Sulphate trying to mix with a small amount of Zinc, and as such, not much energy is needed to make the 2 chemicals react, so less heat is given out. If I were to do the experiment again, I may well decide to explore what happens when you keep the zinc amount level and vary the amount of Copper Sulphate. This is because I would like to know whether the reactions kept getting colder, or weather they curve off as you get more Copper Sulphate. I would do this experiment because then I would be able to understand what happens in the reaction, Zn(s) + CuSO4 (aq) Cu(s) + ZnSO4 (aq). I would like to know whether my preliminaries were wrong, and that the temperature wasn't supposed to decrease. Morgan Richardson Page 1 ...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 Patterns of Behaviour 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 GCSE Patterns of Behaviour essays

  1. Marked by a teacher

    Chemistry copper sulphate and zinc

    3 star(s)

    This is because there will be more reactant for the copper sulphate to react with. When I use Avogadro's theory of moles, I believe that the zinc will not be able to be seen, because it will be in solution with the sulpher.

  2. Studying the reaction between zinc and copper (2) sulphate solution.

    I constantly measured the temperature of the solution, then when the temperature had stopped rising I marked down the maximum temperature reached. I could then work out the temperature rise using the maximum and minimum temperatures and put the results into the table.

  1. Investigating the reaction between zinc and copper sulphate

    Method During this experiment I will be measuring the temperature given off as I expect the reaction to be exothermic. I will use 25ml of copper sulphate solution and 0.8125 grams of zinc in each experiment. I manage to work this out using Avogadro's theory of moles.

  2. An Investigation of the Effect of Copper Sulphate on Catalase Activity.

    The rate of reaction drops from 28.08cm3 of oxygen produced per minute to 2.01cm3 of oxygen produced per minute as the concentration of copper sulphate solution is increased from 0mols to 0.2mols. The rate of reaction gradually decreases as the concentration of copper sulphate is increased.

  1. Investigating the temperature change in the reaction between powdered zinc and copper sulphate.

    During my experiment I must ensure a fair test. To do this I will keep the concentration of the copper sulphate the same, I will use the same polystyrene cup and lid in each experiment and I will time each experiment for the same period of time (1minute). I must also ensure that I use the same balance in each test as the accuracy of different balances often varies.

  2. Investigating Rates of Reactions

    Evaluation: 1) Quality of observations: An estimation of the accuracy of all the observations and measurements: I would say that the accuracy of the measuring is not 100% exactly right. This is because we cannot ensure that we will measure each volume of solution to the set amount that we need.

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