• 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...


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.


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.


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)

    300 51 21 20 21 21 20-21 320 54 21 20 25 22 20-25 340 55 21 25 26 24 21-26 360 57 25 25 26 25 25-26 380 57 26 25 26 26 25-26 400 60 29 29 28 29 28-29 420 62 29 29 29 29 29 440

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

    and I am going to use 0.5 grams of marble chip in each concentration. I am going to use this amounts because Collision theory Collision theory states that reaction can only happen when reactant particles collide with each other, but most collision of the particles are not successful in forming

  2. Reacting Marble Chips with Dilute Acid.

    Volume of acid (cm�) Volume of water (cm�) Temp (�C) Mass of marble chips (g) Quantity of marble chips Time (s) 2.0 0 50 0 25 3 14 0 15 10 23 20 35 30 50 40 65 50 78 60 95 70 95 80 95 90 95 100 0.4 0 40 10 25 3 21 0 3

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

    diluting the acid concentration * incorrectly screwing the cork into the collection cylinder, which would mean that some water leaks out and some bubbles get inside To carry out this experiment properly, following measures must be taken: 1. There must be a diagram of the apparatus that is being used in the experiment 2.

  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.


    The particles simply hit and then rebound. This animation illustrates what happens in an ineffective collision. Collisions that lead to products are called effective collisions. An effective collision must happen with a great enough speed, energy and force to break bonds in the colliding molecules. The animation illustrates an effective collision between two diatomic molecules.

  2. How increased concentrations of acid affect the rate of reaction between hydrochloric acid and ...

    I will wear safety glasses for the experiment to ensure my safety. I predict that the reaction time will be quicker under higher concentrations of acid. So the gas syringe will pushed out further and quicker in high concentrations of acid and less and slower in low concentrations of acid.

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