• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4

# An Investigation Into The Factors That Affect The Enthalpy Change During A Displacement Reaction.

Extracts from this document...

Introduction

zinc and cuso4 reaction An Investigation Into The Factors That Affect The Enthalpy Change During A Displacement Reaction. Background Knowledge The reactivity series is an order that places metals in that series depending how vigorously that metal reacts with water, air or acid. A more reactive metal could displace a less reactive metal from its' compound. Zinc (Zn) is a more reactive metal than Copper (Cu); it is higher in the reactivity than copper and thus when some zinc is placed in a solution of copper sulphate a displacement reaction takes place. The zinc goes into solution while the copper is "forced" out of solution. The situation can be described as follows: The full equation is: Zinc + Copper Sulphate = Copper + Zinc Sulphate Zn(s) + CuSo4 (aq) = Cu(s) + ZnSo4 (aq) The Ionic equation is: Zinc + Copper = Copper + Zinc Zn(s) + Cu 2+(aq) = Cu(s) + Zn 2+(aq) The experiment will be exothermic; this means during the reaction, energy will be given off, mainly heat energy. ...read more.

Middle

will apply including the wearing of safety goggles, no running, the washing of hands after undertaking the experiment and no eating in the laboratory. Preliminary work During the undertaking of preliminary work, prior to doing the experiments that the final results would be taken from, a few interesting and relevant points were taken. Such as the quantities of Zinc and Copper sulphate solution used, I found during the preliminary work that 30cm3 of CuSo4 wasn't enough and that 70 was too much, which is why I kept the volume of CuSo4 at 50 ml3 as a constant. Similarly I found that any more than 5g of Zinc used would produce varied results and hinder the accuracy of the experiment. This is why I kept the constants at 50ml for the CuSo4 and only a maximum of 5g for the zinc. I also found that using a plastic lid over the cup aided the insulation, thus giving more accurate results. Experimental prediction I predict that the greater the mass of zinc, the greater the heat produced within the experiment. ...read more.

Conclusion

For example I would make sure that the correct apparatus was used each time, and that the apparatus was used correctly. In calculating the average results the figures would be given to 2 decimal places instead of one to ensure a higher accuracy in the final answers. When I think that the temperature has stopped rising I will time 30 seconds, if the solution doesn't get any hotter I will record this temperature as it will be the peak temperature, counting the thirty seconds makes sure that the solution is at the hottest it is going to get. Experimental procedure - Collect, prepare and set up all the apparatus correctly, including the weighing of zinc and the measuring of copper sulphate solution. - Pour the copper sulphate solution into the polystyrene cup, read the initial temperature of the solution and note it. - Into the solution add the Zinc and stir. - Watch the thermometer, when the solution stops rising in temperature, time out 30 seconds. If the temperature doesn't get any hotter record this temperature as this will be the peak temperature. - Note this temperature in a pre-prepared table. - Repeat this four times for each mass of zinc (1-5g). ...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 Classifying Materials 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

# Related GCSE Classifying Materials essays

1. ## In this CDA I will write about how plastic bags are made, why plastic ...

out that even the 'weakest' plastic bag is still strong and would still carry a lot of groceries considering it is free. Many people who complain about how they are weak and how they may break, in some ways have no right to.

2. ## Investigating the energy change when zinc reacts with copper(II) sulphate.

of zinc powder to the CuS04 and stir for a few minutes. I will record the final temperature of the reaction and record it. I will subtract the initial temperature from the final temperature in order to find the temperature rise.

1. ## Investigating the Factors Affecting the Temperature Change Between Zinc and Copper Sulphate

The concentration of copper sulphate solution is 0.5 mol/litres. One mole of copper sulphate solution can be calculated as shown below: CuSO4 1 mole = (1 x 64) + (1 x 32)

2. ## Investigation of Energy Changes in a Displacement Reaction.

Using a spatula measure out the desired amount of zinc into the small glass beaker (I started with 0.5g and raised the mass by this amount each time). 5. Add the zinc to the copper sulphate sample and stir continuously.

1. ## Investigate a factor that effects the change in temperature between iron and copper sulphate.

The concentration of the copper sulphate I will keep the volume of copper sulphate the same in this investigation, as it will change the amount of copper molecules, therefore it will affect how much iron it takes to react with all the copper in the solution.

2. ## Rate of reaction of hydrochloric acid on magnesium.

The curve just shows that the reaction is almost finished. By this particular graph I am convinced that if I had reacted 0.9M of HCl with Mg I would see a definite curve with the line completely flattened out between the time interval of 0 to 90seconds.

1. ## Our experiment consisted of two samples of water containing unknown substances, and our objective ...

Instead, you'll have a definitive amount of soap solution you're letting in one go. 5. To be able to shake the flask properly, you need to put a bung on it otherwise some of the sample can just splash out and you results may get corrupted.

2. ## An Investigation Into How the Mass of Zinc Effects the Heat Change In the ...

Mass of zinc (g) Preliminary work The preliminary work that was carried out determined whether a significant change in the temperature could be observed using the various masses. As the results that were produced in the preliminary experiment were accurate, it was decided that they would be used in the actual experiment.

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