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

Investigating how changing the temperature of sodium thiosulphate affects its reaction with hydrochloric acid.

Extracts from this document...

Introduction

Investigating how changing the temperature of sodium thiosulphate affects its reaction with hydrochloric acid. Aim: The aim of my experiment is to investigate the effect that temperature has on the reaction between sodium thiosulphate and hydrochloric acid. I will do this by changing the temperature and timing how long the reaction will take to get to 1 lux. Prediction: I predict that when I increase the temperature of the sodium thiosulphate the time in which the reaction will take place will be much faster. I assume this because when particles are heated they get more energy so they move much quicker and then the reaction will be much faster. As the temperature rises so does the energy in the Sodium Thiosulphate particles, so they move faster and even more. Symbol equation for reaction: Sodium + Hydrochloric ? ...read more.

Middle

Fair test: In this experiment the variable is the temperature since it is the only one that changes. Variable (Factor) Change Control (keep the same) Temperature, Amount of chemicals, Chemicals, Apparatus used, Yes Yes Yes Yes Accuracy: To make my experiment accurate I measured all the certain liquid in a measuring cylinder and then looked at it and made sure I read it at eye level. I made sure that I did the experiment exactly the same way each time I repeated it. I also made sure that I double-checked any unusual (anomalous) readings. After each experiment I thoughly washed the conical flask and the measuring cylinders so there was no trace of the past experiment to react with the one I am currently doing. I repeated the experiment three times to find the mean (average) results. Safety: To make my experiment safe so that neither myself nor anyone else in the laboratory was hurt I... ...read more.

Conclusion

I think that I got these results because the higher the temperature is the quicker the reaction. This is because when the particles in the sodium thiosulphate get hot they get more energy so they move more, which sped up the reaction. Evaluation: I think the experiment that I done went very well. All of the results I got were as I expected. The results I got were quite accurate for when I repeated the experiment. The results I got were similar to most of the other students in my class. The points on the graph I done was close to the best-fit line and there were no strange results. I think the method I used was good. I think that the good things about it were that the experiment was set out good and that the liquids were measured very accurately. If i was to do my experiment again I will increase the concentration of the hydrochloric acid. By Shahid Ali Parvez. Chemistry 10.5/A ...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
  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work