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

Does the amount of hydrogen gas formed in the below reaction depend on the amount of magnesium used?

Extracts from this document...


Aim: Does the amount of hydrogen gas formed in the below reaction depend on the amount of magnesium used? Prediction: I predict that as the amount of magnesium used increase, so will the amounts of hydrogen gas produced. I will use the collision theory to explain this. The collision theory involves a chemical reaction taking place between particles when they collide. There are a variety of factors that affect how frequently particles collide, and how successful these collisions are in making a chemical reaction: * Concentration of acid: this is how many molecules are in the acid the higher the concentration the more molecules are in there. When there is a higher concentration the reaction will occur faster because there are more molecules to react with so the reaction takes place more frequently. ...read more.


After setting up the equipment as shown in the diagram, I will pour 10 ml of the sulphuric acid into the side arm flask and then add the piece of magnesium to the acid in the side arm flask and put the bung on the side arm flask. It will be carried out in this order as it was found to be the most efficient in the preliminary work. I will then collect the hydrogen gas in the measuring cylinder. To make sure it is a fair test I will keep certain factors constant. The factors I will keep constant are the same amount of acid (in ml), volume of acid, type of acid and concentration of acid. Also I will wash all equipment to stop contamination and I will not shake the flask because I cannot ensure that I will shake the flask the same way and amount each time, which will influence the results. ...read more.


You can see from my graph that no anomalous results were taken which shows that my results were fairly accurate because I carried out the experiment to the guidelines laid out in my plan to ensure a safe and fair test. Evaluation: My experiment was not as accurate as it could have been which slightly lowers the reliability of my results. To make my experiment more accurate I could find a more accurate way of cutting the magnesium into strips or using the weight of magnesium instead of length. Also I could develop a way of releasing the magnesium into the acid without losing any gas from the flask. Also I could of changed the collecting method and used a gas cylinder which would be more accurate. A way I could further this experiment is by changing the other variables, such as the type of acid, the strength of acid or the volume of acid. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Physical 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 AS and A Level Physical Chemistry essays

  1. Marked by a teacher

    Experiment investigating hydrogen bonding in different chemicals.

    5 star(s)

    Answer to Study Questions What (theoretical) assumption(s) is/are taken in estimating the strength of hydrogen bond in the two cases? Hydrogen bond is defined as the intermolecular force formed between H atom attached to F, O, or N and the lone pair electrons on F, O or N.

  2. Mole Concept in Gas and Electrolysis

    3I2 + 3H2O Equation III 8.> The mixture is then titrated immediately with standard Na2S2O3 solution to find out the number of moles of excess I2. Hence, the mass of ascorbic acid reacted can be calculated. (c) KCl http://hk.geocities.com/fatherofchemistry Results Mass of NaIO3 : 0.63 g ?

  1. Investigating the Rate of the Reaction between Bromide and Bromate Ions in Acid Solution

    The value of Pearson's Product Moment Correlation Coefficient for these results is 0.981, again suggesting strong positive linear correlation. This leads me to the conclusion that the reaction is first order with respect to the concentration of bromate ions. CONCLUSION 2: (Equation 3.5.2)

  2. Investigating how concentration affects rate of reaction

    Add 5cm3 of potassium bromide solution of the required concentration to another beaker. For most trials the potassium bromide will need mixing with distilled water to reach the desired concentration. 4. Place the first beaker onto a white tile and pour into it the potassium bromide solution.

  1. Describe the construction, operation and application of distillation equipment used in industry

    materials and price of manufacture compared to the efficiency which is lower than a lot of other options. Sieve Trays: Again, high cost for the efficiency that is given. Valve Trays: Cheaper alternative to bubble caps and sieve trays, with a greater efficiency than the bubble caps.

  2. Neutralization investigation

    I will wash the burette with distilled water- it must not be tap water as this does not have a pH of exactly 7 so it will not remove all alkaline or acidic substances from the burette. It is important because if any of the acid is left in the

  1. Free essay

    Experiment. Is the order of reaction affected if the acid is monoprotic or diprotic?

    In this case, the half-lives will be increasing and the units of the rate constant are mol-1 dm3 s-1. Example of a second order reaction. (Fig 4 ref 4). The link between RDS and order of reaction The rate determining step in a reaction is the slowest step.

  2. Investigating the effect on the rate of reaction when changing the acid that is ...

    able to take readings from these to Results: 25 cm3 0.1 molar phosphoric acid 0.7g magnesium powder Time/seconds Volume/ cm3 10 16 20 22 30 24 40 24 50 24 This reaction had a fast initial rate but levelled off extremely quickly.

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