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

What Affect Does Concentration Have On the Rate of a Chemical Reaction?

Extracts from this document...


What affect does concentration have on the rate of a chemical reaction? Prediction I predict increasing the concentration the quicker the reaction will be this is due to the collision theory, which states that for a reaction to take place particles have to collide, and with enough energy. The more particles more collisions will occur. By adding a more concentrated solution more particles are added which means more collisions and this is why I think the reaction will be quicker. Diagram Plan We took 3 beakers, one that was filled with dilute water, another one filled with sodium thio sulphate. The third beaker was used for the actual experiment. We then took a glass full of hydro choleric acid. ...read more.


We kept the volume of the Hydro Choleric acid the same throughout the experiment as the whole idea of the experiemt was to see what affect concentration has on the rate of the reaction. Variables For this experiment we kept the same amount of Hcl in to make the experiment fair the variables were the sodium thio sulphate and the water. We controlled the variables by measuring them out accurately each time and making sure we didn't mix any of the to before hand to make it a fairer test. We did this by washing the pipette out after each time we had used it. Equation Na + S O (aq) + Hcl (aq) Na Cl (aq) + H 0 (I) ...read more.


Meaning that the less sodium thio sulphate the less particles which means that it will take longer for a reaction to take place. Evaluation I feel that the experiment went well. I felt that our results were fairly accurate as you can see from my graphs but because I rounded up the time to the nearest second my results could be slightly out. The equipment I worked with was good and I did not have any problems with it. To improve this experiment I believe that we would need to repeat the experiment a few more times to make our results more accurate. But I do feel that the results obtained show enough evidence for my conclusion. I believe that my experiment worked and if I did it again then I would spend more time getting more results to make it more accurate. ...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. How Does Concentration Affect the Rate of a Chemical Reaction?

    > M1V1=M2V2 1.0M x V1 = 0.8M x 20ml 1.0M x V1 = 16 V1 = 16/1.0 V1 = 16 20ml - 16ml = 4ml V1 is the volume of the acid, V2 is the volume of the whole solution.

  2. How concentration will affect the rate of a chemical reaction.

    Record how long the reaction takes. (Until the ribbon disappears) 8. Repeat this twice more to get an average time. 9. Measure 10cm3 of hydrochloric acid at a concentration of 0.5M into a test tube. 10. Add a piece of magnesium ribbon and start the timer.

  1. Factors That Affect the Rate of a Chemical Reaction.

    - Stop-clock. - Water bath. - Polystyrene cup. Materials: - 1.00M hydrochloric acid. - 0.20M hydrochloric acid. - Magnesium ribbon (10 cm strips). - Zinc metal (mossy). - Steel wool. - 0.20M solutions of copper (II) nitrate; nickel (II) nitrate and cobalt (II) nitrate; iron (II) ammonium sulfate(s).

  2. How does concentration affect the rate of a chemical reaction?

    So the relationship between the number of effective collisions and the rate of reaction is that the more effective collisions per second, the faster the rate of reaction. The diagram explains this: Previously, an experiment has been carried out in which marble chips and dilute acid was used instead of thiosulphate and hydrochloric acid.

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