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

Investigate how the concentration of hydrochloric acid effects the reaction between hydrochloric acid and sodium thiosulphate.

Extracts from this document...

Introduction

Abdullah javed 10w/k science coursework Rates of reaction Aim: To investigate how the concentration of hydrochloric acid effects the reaction between hydrochloric acid and sodium thiosulphate. Introduction: I will be conducting an experiment on the rate of reaction for my gcse coursework. I will be doing this coursework for a period of two weeks. We will be reacting sodium thiosulphate with hydrochloric acid. And i will be investigating how the concentration of hydrochloric acid effects the reaction between hydrochloric acid and sodium thiosulphate. When sodium thiosulphate and hydrochloric acid are mixed, A yellow precept of sulphur is produced the solution becomes increasingly difficult to see through as more and more sulphur is formed. ...read more.

Middle

The volume of Hcl is needs to be kept at 10cm3 constantly each time .start with 60cm3of sodium thiosulphate .last reaction will have only 10cm3of sodium thiosulphate.reactions will be completed when the x will disappears, for the timing to stop .three reaction will be made for each test ;this is done to gain different averages. Diagram: Apparatus: * Measuring cylinder(50cm3) * Small measuring cylinder * Conical flask(100cm3) * Sodium thiosulphate * Hydrochloric acid * Water * Stop watch * 2 beakers. * Paper with "x" on it Method: * Put 1.15 of calcium carbonate into the test tube. * Place the rubber bung connected to the gas syringe. ...read more.

Conclusion

I can see that as the concentration increased, the amount of gas produced was produced faster and more of it was produced. Evaluation: If I had waited longer, and continued recording the results until the time was up rather than until nothing could be seen. As when nothing could be seen the experiment could still be happening but very little could have been happening. I should have also have recorded my results every 5 seconds rather than 10 seconds to get more results to analyze. I would make sure I used the all the same apparatus if I had to continue my experiment at a different time because different apparatus have different measurements and that would effect the experiment. ...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 Aqueous 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 GCSE Aqueous Chemistry essays

  1. Marked by a teacher

    chemistry coursework

    4 star(s)

    Starting with the slowest times and finishing with the fastest times of the reaction. However it was not a perfect curve therefore my prediction was not exactly the same as my results although it was quite close. My results were very close to my prediction apart from some anomalous results.

  2. To investigate the rate of reaction between different concentrations of hydrochloric acid with metal ...

    otherwise, one might find that because of gravity, in one experiment it runs smoothly and in the next, because of the angle, the syringe is not moving at all. Answer: make the syringe parallel to the desk, so there is fairness in all the experiments.

  1. In this experiment, we aim to investigate the effect of sodium carbonate on hard ...

    The result of the reaction is that the soap cannot react well with the calcium ions (because they are 'locked' in the insoluble calcium carbonate), and thus this makes it more difficult for 'scum' to be formed, and a lather appears faster.

  2. The Rates of Reaction of Metals with Acid.

    Using 1 thermometer for the conical flask and 1 thermometer for the water bath. 5) Place the magnesium strip in one of the conical flasks, then start the stopwatch and add the cotton wool to the neck of the conical flasks.

  1. Investigating the effects of changing the concentration of different solutions on the refractive index ...

    in water measured in moles per 100 cm3 of water at 298K = 0.4980 - 0.5059 = 0.5020 To make up a sugar solution of 50 cm3, Maximum moles of sugar to be put in = Maximum solubility ? Volume of water Upper boundary of the maximum moles of sugar to be put in = 0.5059 mol 100 cm-3 ?

  2. To investigate the reaction between Sodium Thiosulphate and Hydrochloric Acid.

    An apron will also be worn to protect the skin and clothing. Analysis: During the experiment I noticed that as the amount of water increased in the solution, the slower the reaction time was. This is clearly demonstrated by my line of best fit on my graph, which shows that as the concentration decreases, the reaction time increases.

  1. Rate of reaction- Sodium Thiosulphate and Hydrochloric Acid.

    I must also decide on an amount of thiosulphate to use. I could either use a range of 50 going down in tens or 25 going down in fives. I need to conduct a trial experiment in order to decide these two factors: Method for trials Take three different molars of acid; 0.5, 1 and 2.

  2. Sodium Thiosulphate with hydrochloric acid.

    acid the same, the exact same time that I start the timer (e.g. As soon as I mix the solution) and the same overall amount of liquid in the beaker in all of the experiments. Diagram: Results: Exp1|Exp2|Exp3|Exp4|Exp5 Sodium Thiosulphate Solution (cm3) 50 40 30 20 10 Distilled Water (cm3)

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