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

Rate of Reaction Between Marble Chips and the Varying Concentrations of Hydrochloric Acid

Extracts from this document...

Introduction

Rate of Reaction Between Marble Chips and the Varying Concentrations of Hydrochloric Acid Planning Before starting the experiment I had to work out how much marble chips would be needed and how much HCl would be needed. I decided that 20 grams of marble chips would be needed and I measured this on a pan balance. The chips would have to be of medium size as from a previous experiment done in class I realize that changing the surface area of the marble chips would change the rate of reaction. I then used 100 cm3 of HCl and this would be the only variable that I will change. I decided to use the concentrations of 0.5M, 1.0M, 1.5M and 2.0M (1mole/dm). To make these different concentrations I added different proportions of distilled water to the 2 molar HCl. For the 2M solution I left the HCl alone, for the 1.5M solution I put 75 cm3 of HCl and 25 cm3 of distilled water. ...read more.

Middle

The results we achieved was as follows: Volume of Sodium Thiosulphate Volume of Water Concentration of Sodium Thiosulphate Time in seconds 1000 Time 50 0 0.15 22.70 44.05 40 10 0.12 29.26 34.18 30 20 0.09 40.58 24.64 20 30 0.06 66.25 15.09 10 40 0.03 139.45 7.17 I think that the results of the marble chips and HCl experiment will show the same results as this Sodium Thiosulphate experiment. As the higher the concentration the increased amount of ions per cm3 and therefore more frequent collisions between them, which then makes the experiment react faster. Another reason I think that the rate of reaction will increase is that the experiment is exothermic, this means that it will give itself more energy and therefore more collisions and faster collisions. Also in the 2.0M solution compared with the 0.5M solution there are much more HCl particles in the same volume so the are going to collide with each other more often. ...read more.

Conclusion

65.23 74.82 72.72 70.92 14.23 Analyzing Evidence and Drawing Conclusions From looking at my results and graph I am able to conclude that the more concentrated the acid the quicker the reaction happened and the faster the gas was produced. This is as I predicted and I think they match quite well as the rate of reaction graph is basically a straight line and the average time graph has an increasing gradient. Evaluating Evidence Overall this was a very successful experiment and everything went very smoothly, and that was why my results were very good, and I am able to make the conclusion that the higher the concentration the faster the rate of reaction. From looking at my results I can see that there were no poor results, which was a good thing, and it proves that everything went very well. There was no real source of error in the equipment. The only possibility was if the temperature of the acid had changed from when we did the first reading to the finish. ...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

    In this investigation we are going to measure the rate of reaction of marble ...

    3 star(s)

    84 86 81 80 71-86 320 77 86 86 83 83 77-86 340 80 88 87 89 86 80-89 360 81 90 88 90 87 81-90 380 82 92 88 90 88 82-92 400 83 93 89 93 90 83-93 420 85 94 89 93 90 85-94 440 86 95

  2. Investigating the Rate of Reaction Between Marble Chips and Hydrochloric Acid

    An increase in concentration produces more collisions. The chances of an effective collision goes up with the increase in concentration. Only experimental observation reveals the link between concentration and reaction rates. * Safety As with any investigations great care should be taken and the experiment should be undertaken in a sensible manner.

  1. How does varying the concentration of Hydrochloric acid in reaction with Marble chips affect ...

    of them, then change the other variable whilst keeping the previous constant. * Safety precautions to be taken are: * When handling the chemicals no contact should be made between the person carrying out the experiment and the chemicals. * When working with the Bunsen burner it must always be on the yellow flame (the weakest one).

  2. Investigate how varying the surface area of marble chips differs their rate of reaction ...

    Next we will gather up all our equipment, Next we will get a clamp stand and attach a clamp to it and then attach a gas syringe holder to the clamp, when will make sure that the gas syringe holder is clamped very tightly to the clamp to make sure

  1. Investigation of the reaction between marble chips & dilute hydrochloric acid.

    64 3 40 3 0.35 2min 30sec 38 4 20 5 0.55 5min 40sec 138 4 50 7 0.78 2min 30sec 89 The preliminary showed that the experiment worked. I decided to use 5 different type of concentration of hydrochloric acid and they were all going to be 50 ml

  2. INVESTIGATING THE RATE OF REACTION BETWEEN MARBLE CHIPS AND HYDROCHLORIC ACID

    You do this every time you put something in the refrigerator. If you want to see the effect of elevated temperatures increased reaction rates you can leave some dairy product out of the refrigerator for a few days and compare its condition with the same age dairy product that was kept cold.

  1. Reacting Marble Chips with Dilute Acid.

    less water particles acting as obstacles and more nitric acid particles to collide with the marble chips, therefore more collisions are successful. If the concentration is lower, there will be more water particles to get in the way of the nitric acid particles therefore it would become more difficult for

  2. Investigating the rate Of reaction between Acid and marble

    Place the 2 grams of marble chips into the flask containing the acid, as soon as this is done start the stopwatch. 7. Record the weight at intervals of 30 seconds for 5 minutes. 8. Repeat steps 1-7 2 more times to get three sets of results for increased reliability.

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