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

How Does the Temperature of Hydrochloric Acid Affect the Rate of Reaction Between Hydrochloric Acid and Magnesium?

Extracts from this document...


How does the temperature of hydrochloric acid affect the rate of reaction between hydrochloric acid and magnesium? Aim: This coursework is aimed to find out the rate of reaction between hydrochloric acid and magnesium in different temperature. The product of this chemical reaction is magnesium chloride and hydrogen. Safety: We should wear lap coat and wear goggles when doing this experiment, because acid is corrosive and irritant, especially when you boil it, it is very easy to spit into your eyes and it is harmful, so we must keep wearing on the goggles all the time. Lap coat is also needed to protect our skin from contacting the acid. If our skin contact with the acid, we should immediately wash it under the tab water. Magnesium is highly flammable, so we should keep it away from the fire. We should also be careful when using the syringe and other glassware. Preliminary work: In this preliminary work, the aim is to find out the suitable length of magnesium ribbon, the suitable concentration of acid and the suitable volume of the acid, and the temperature range I plan to investigate. I tried a 3 of magnesium ribbon but it gives out too little gas (35) which is very hard to measure and 7 are too long, due to magnesium's mass, it is lighter than acid, so it is floating on the acid which means it's surface area are not all contacting with the acid, which makes the test unfair, so I figure out 5of the magnesium ribbon, (gives out about 55of hydrogen) ...read more.


25 75 29 32 30.5 90 35 38 36.5 105 40 43 41.5 120 45 46 45.5 135 48 47 47.5 150 50 51 50.5 Rate of hydrogen given out every 15 secs at 25?C Time /sec Volume of hydrogen given out / experiment 1 experiment 2 Average 15 10 11 10.5 30 19 20 19.5 45 28 29 28.5 60 36 38 37 75 43 45 44 90 48 50 49 105 49 50 49.5 Rate of hydrogen given out every 10 secs at 30?C Time /sec Volume of hydrogen given out / experiment 1 experiment 2 Average 10 9 10 9.5 20 16 18 17 30 26 27 26.5 40 33 37 35 50 42 45 43.5 60 47 49 48 70 50 49 49.5 Rate of hydrogen given out every 10 secs at 35?C Time /sec Volume of hydrogen given out / experiment 1 experiment 2 Average 10 12 11 11.5 20 24 20 22 30 33 31 32 40 42 40 41 50 49 46 47.5 60 50 49 49.5 Rate of hydrogen given out every 5 secs at 40?C Time /sec Volume of hydrogen given out / experiment 1 Experiment 2 Average 5 10 9 9.5 10 16 15 15.5 15 22 20 21 20 28 27 27.5 25 33 30 31.5 30 38 38 38 35 43 45 44 40 47 49 48 45 50 51 50.5 50 51 51 51 Rate of hydrogen given out every 5 secs at 45?C Time /sec ...read more.


Thirdly, the concentration may not be a constant as the dilute acid's concentration may not be the same when they are given to me .Human eyes are not reliable for accurate measurement, so the ratio of water and acid may varies when I use a measuring cylinder to measure the acid and the water. The acid which is heated may evaporate a bit. These are very hard to improve as human eyes cannot look at things very accurately, also I can just keep the temperature as low as possible to avoid the acid evaporate. Fourthly, the magnesium is always floating on the acid , which varies the contact surface area of the acid with the magnesium and it makes the result inaccurate. Lastly, the reading of the thermometer and the volume of gas syringe may not be very accurate, as I have said , human eyes are not very reliable. Although there is lots of area, I still did all my best to keep the result more reliable and there are several things I can improve. I should measure the volume of hydrogen gas given out in a smaller range which can make the graphs more reliable and accurate, and I should do the experiment several more times and calculate out the average which can make my results more reliable and I should work in group of about three, which can keep the varieties as less as possible and make the experiment more accurate. ?? ?? ?? ?? Chris Chan 2 1 ...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)

    94 350 98 97 94 96 360 99 100 99 99 370 100 100 100 380 390 400 Analysis My results suggest that as the temperature gets colder, the longer it takes for the solution to react; meaning a slower rate of reaction.

  2. The aim of this experiment is to answer the following question: What is the ...

    In terms of the value of Kc I predict that this value decreases as I increase temperature. This is because if more acid is produced it means less ester and water is produced; and as the value for Kc is found by the product concentration divided by reactant concentration, more reactant means lower Kc.

  1. Rates of Reaction

    I will measure the rate of reaction by measuring the volume of the carbon dioxide gas given off from the reaction. I will be conducting three different experiments in order to find out which experiment will be most useful when examining the rate of reaction.

  2. What effects the rate of a reaction

    - You should pour approximately of the hydrochloric acid solution into each test tube. - Label each test tube with a sticker with the correct concentration (molarity) that it includes. - Review risk assessment remembering safety rules and equipment. - Take and measure a Magnesium strip making sure it measures

  1. Rate of Reaction

    35 - - 90 39 - - 100 42 - - Small/Powdered pieces of marble chippings, 2 mol HCl 0 0 0 0 10 4 26 47 20 14 48 88 30 27 69 - 40 36 99 - 50 45 - - 60 56 - - 70 71 -

  2. Rates Of Reaction Between Magnesium And Hydrochloric Acid

    I will then pour the measured acid into a beaker and add the water to dilute the acid according to the test. I will then put the Magnesium strip into the beaker that contains the acid, whilst simultaneously starting the Stopwatch.

  1. whether the strength of Hydrochloric acid will affect the speed of the rate of ...

    The final way in which we will try to keep our experiment fair will be to use the same gas syringe each time therefore we will not have one which glides smoothly for one experiment and one that sticks and jumps for a different experiment.

  2. Reaction between Magnesium and Hydrochloric Acid

    I will carry out the experiments at room temperature, using 50ml of solution and 0.25g magnesium ribbon in four equal pieces. I will time how long it takes to displace 100cm3 water with hydrogen gas. I have chosen to displace 100cm3 because I worked out that the largest volume of gas the experiment will give off is 250cm3.

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