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

To investigate the effect of varying concentration on The reaction between magnesium ribbon And hydrochloric acid.

Extracts from this document...

Introduction

To investigate the effect of varying concentration on The reaction between magnesium ribbon And hydrochloric acid Introduction In this experiment the factor to be investigated is the concentration of Hydrochloric acid on magnesium ribbon. This means that all other factors must stay the same or else this would not be a fair test. I am going to investigate how different acid concentrations affect the rate of the reaction with Magnesium. I am measuring how much Hydrogen is given off in a certain time span. I am going to use five different concentrations of acid and I'll change the concentration by diluting each volume of acid with a certain percentage of water. This means that the overall volume of the liquid is the same all the time (50ml), but just varying concentrations. In order to make sure that this is a fair test and the results are accurate, I will repeat the whole experiment three times and work out the average. The results will not be completely accurate as some Hydrogen may escape before the reaction is sealed. ...read more.

Middle

* Measure out 5cm of Magnesium. * Put magnesium in solution and quickly connect to gas syringe and start the stopwatch and time for 30 seconds. * Once 30 seconds has passed, look at the gas measured and write down results. * Pour end solution into designated bucket and repeat 2 more times with same measured out solution before moving onto next concentrated solution. * Work out average of each experiment and use that in the graph. Safety To keep myself and others around me the following should be followed: * Not do this experiment near fire, as Hydrogen is flammable. * People should wear goggles, as Hydrochloric acid is very acidic and would sting and burn if it were to get into your eyes. * People should wear lab-coats as they protect your clothes from discolouring when Hydrochloric acid is spilt on them. * Girls with long hair should tie it back as they may knock something over with their hair or their hair may touch acid. Results Experiment 1 Magnesium (cm) ...read more.

Conclusion

When there is a higher concentration, there are more acid particles, therefore there is a higher chance of one of them colliding and reacting with a Magnesium particle. This is why the reaction occurs so fast to begin with. Then, as there are less acid particles and more water, there is less chance of these collisions, so the time taken is longer. This can be seen in the graph. Evaluation My experiment all went well apart from the last three readings, in the last experiment. I must have measured the acid out incorrectly or perhaps the magnesium was not exactly 5cm because all the readings were different by a large amount. Because of this human error, I repeated the experiment. I noticed that through the course of the experiments, the readings seem to get higher in value. If I had more time, I would have done the experiments more times each for a fairer test. I would also use more accurate and new equipment, as the equipment I used has been used many times before and may not measure the reaction rate perfectly. ...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

    To investigate the effect of temperature on the rate of reaction

    4 star(s)

    Varying time intervals Using 10 seconds as a time interval for small chips and then 5 seconds as an interval for the small chips does not help us compare easily, and therefore lowers the accuracy of our final results.

  2. The effect of Acid Rain on Seed Germination.

    Again this may have caused some slightly anomalous results in my final readings. Lastly, I found that when I needed to measure the seeds it proved to be very difficult. The cress' roots were all curled up and sometimes when I tried to uncurl then they simply broke off.

  1. See how different concentrations of Hydrochloric acid change the rate of reaction with a ...

    plotted two good graphs one for each experiment Conclusion My results table and graph show me that when I increase the concentration of the hydrochloric acid, rate of reaction also increases. Altogether I tested 5 different concentrations of hydrochloric acid.

  2. The action of amylase and pectinase in varying amounts when clarifying cloudy apple juice.

    The information, which comes with the colorimeter, is in the appendix. The diagram below shows how it does this. Pilot Experiment Results To start with I decided that I would see which apple juice gave me the best results. I decided to do it at room temperature because I knew

  1. The Effect of Concentration on the Rate of Reaction.

    � All results should be noted. The Composition of the Solutions 2M - 100ml of hydrochloric acid 1.5M - 75ml of hydrochloric acid and 25ml of distilled water 1M - 50ml of hydrochloric acid and 50ml of distilled water 0.75M - 37.5ml of hydrochloric acid and 62.5ml of distilled water 0.5M - 25ml of hydrochloric acid

  2. How does changing the concentration of hydrochloric acid effect the rate of reaction between ...

    During this experiment I am going to change a factor this will be the concentration of acid. I am going to use 0.2 molar, 0.5 molar, 1.0 molar, 1.5 molar and 2 molar hydrochloric acid. I will do this so I can see how the concentration of acid effects the reaction speed.

  1. Investigate one of the factors that effects the rate of reaction between Magnesium and ...

    So, theoretically, the end temperature should be lower, the lower the concentration is. Finally, I predict that hydrogen gas will bubble off because of Magnesium's position in the Reactivity Series. I predict this because, when the acid is stronger, the magnesium will react quicker.

  2. To investigate the effect of changing the concentration of acid on the rate of ...

    therefore speeding up the reaction, as there are more of them to react with the acid particles. This will make the experiment unfair and inaccurate. (See diagram below.) Other factors that affect the rate of reaction are... Temperature. When the temperature increases, the particles have more energy and they then

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