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

How does temperature affect rate of reaction?

Extracts from this document...


Chemistry How does temperature affect rate of reaction? How does changing the temperature of Hydrochloric acid affect the amount of hydrogen given in a reaction with Magnesium? Does the amount of Hydrogen change? Does the speed of the reaction change? Experiment information: Acid used : Hydrochloric (1 Molar) Metal used : Magnesium (ribbon) Temperature variation 0C : 200 - 300 - 400 - 500 - 600 Amounts : 5 cm of Mg ribbon, 100 ml of acid Method: I took equal amounts of Magnesium and placed them in acids of varying temperature (see above). To create heat, I used a bunson. The solutions were held in boiling tubes, and a bung and rubber tubing was used to catch the escaping gas. This tube was placed into a hot water bath beneath a water-filled measuring cylinder. The temperature of the boiling tubes was monitored using a thermometer. Using a stopwatch, I measured the amount of hydrogen gas produced at 15 second intervals. To make sure the experiment was carried out fairly, the only variable changed was the temperature of the acid. ...read more.


The amount of Hydrogen produced is limited to the amount of Magnesium or acid that is available to react, and thus produce it. The equation for the reaction between Magnesium and Hydrochloric Acid is as follows Mg + 2HCl (aq) ==> H2 + MgCl2 (aq) The Magnesium reacts with the Hydrochloric Acid to produce Hydrogen, as a gas, and the salt Magnesium Chloride in the water. We know that the gas is Hydrogen because it gives a sharp pop when lit with a splint. Results: Results 2 Time (secs) Gas Volume: 20o 30o 40o 50o 60o 15 0 0 0 0 0 30 19 24 28 30 33 45 25 35 39 41 45 60 37 38 42 44 48 75 43 42 48 49 50 90 46 45 50 50 50 105 49 48 50 50 50 120 50 48 50 50 50 I performed the experiment three times to ensure accuracy. The results are tabled on the next page, including an average of the three. ...read more.


We can also see how the reaction begins very rapidly, and then slows down and finally stops, as the curve inclines steeply at first and then levels out. Evaluation: The experiment was on the whole a success. However a lot of the data could have been more accurate: on the first results graph especially there was a lot of rogue data causing some of the curves to overlap. To improve the experiment I could have been more thorough in making sure there was no air in the gas cylinder, and that no Hydrogen escaped when the reaction first started. This was probably what caused only 48 ml of Hydrogen to be produced for one of the experiments (Results II at 300). I could also improved the way in which the Hydrogen gas was measured, possibly by doing it electronically. Human error in measuring off the amount of gas was probably what caused some of my results (mainly in the Results I, some in Results II) to be slightly nonconforming. Also, if I had taken measurements more frequently, say every 5 seconds, my graphs would be much more representative. ...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. How much Iron (II) in 100 grams of Spinach Oleracea?

    Average Titre = 7.30 + 7.30 + 7.20 3 = 7.27cm3 Experiment Seven - How much Iron (II) can be extracted from 20 grams of Spinach Oleracea when boiled in Distilled Water(l) Experiment A - preformed using a spinach extract solution created by boiling 20 grams of spinach in Distilled Water (l)

  2. How Does Changing The Temperature Of Acid Affect The Rate That Limestone Reacts.

    the limestone, the temperature of the acid, the surface area and volume of the acid. To see if the temperature does affect the rate that limestone dissolves in acid, I will see how long it takes to produce 40cm� of carbon dioxide.

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