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

Enzyme In Industry

Extracts from this document...

Introduction

Abdulrahman Al Khalifa Chemistry Gr. 11B June 3rd 2008 Mss Shaikh Rates of reactions Research question: How does the concentration of nitric acid affect the rate at which magnesium reacts with it? Apparatus/materials: * flask * measuring cylinder * Weighing scale * Gas syringe * spatula * timer * Magnesium filings * Nitric acid 0.5, 1.0, 1.5, and 2.0 molar concentrations * Metal stand * Cork (with tube attaching it to the syringe) Variables Independent Variable: Molar concentration of the nitric acid (0.5, 1.0, 1.5, and 2.0) Dependent Variable: The rate at which the magnesium reacts with the nitric acid Controlled Variable(s): environment, temperature, amount of magnesium, apparatus. Note: in order to keep everything as controlled as possible defer from touching the flask once the magnesium the reaction has started, this is due to the fact if any act of stirring takes place it will drastically affect the rate at while the reaction takes place which then will render the data collected to be futile. ...read more.

Middle

Graph(s): Above the graph shows that the reaction was in fact very slow to begin with however the change in the rate of the reaction does not change significantly. Above the graph shows that the reaction was much faster than the previous one and the change in the rate of the reaction is more clear as seen in the graph, the slope is much lower towards the end of the reaction compared to the beginning. Above the graph shows that the reaction was much faster than the previous one and the change in the rate of the reaction is more clear as seen in the graph, the slope is almost 0 towards the end of the reaction. Above the graph shows that the reaction was much faster than the previous one and the change in the rate of the reaction is more clear as seen in the graph, the slope is almost 0 towards the end of the reaction. ...read more.

Conclusion

A solution to this problem is that if we had more time in order to allow the reaction to fully complete (as seen in the graph represent 0.5 molar solution of nitric acid, the reaction actually never stopped however, we had to stop due to time restrictions). In addition a lot of gas may have escaped as the reaction fist started due to the fact that the cork couldn't have stopped all the hydrogen from escaping, this could have been avoided if the magnesium was put into any type of capsule which dissolves as it is put into acid thus delaying the reaction giving us time to seal the flask completely. Overall the experiment was a success and it did show how the concentration of an acid affects the rate at which magnesium reacts with it. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate 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 International Baccalaureate Chemistry essays

  1. Experiment - The Empirical Formula of Magnesium Oxide

    Readings of masses Random error Wait until the readings stop changing; weigh at least 3 times to get an average.

  2. Lab Experiment : The change in mass when magnesium burns. (Finding the empirical formula ...

    Therefore, something is wrong with my experiment as in the trails which I performed the Mg/O ratio is 1.2, that means that the empirical formula would be Mg6O5. Therefore Percentage error = 2% and Percentage uncertainty= 0.04% The percentage error of 2% is larger than the experimental uncertainty of 0.04%, so there must be significant systematic error.

  1. Are you consuming too much fuel?

    Also, we can see that my family's electricity consumption would only be equal to the highest fuel consumption (Sweden) if I multiplied the value by seven. However, when we compare my family's electricity consumption to third world countries3, results are different.

  2. Reaction Rate

    Collect all necessary equipment from the equipment table- all equipment should be in one tray. 1. Setup the retort stand and clamp on a stable desk. The clamp should be fixed approximately half way up the stand. 1. Open up Photo Booth or a similar video/image-capturing program on a laptop

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