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

Which equation is correct - Equation 1: 2CuCo3(s) ® Cu2O(s) + 2Co2 (g) + 1/2O2(g)Equation 2:CuCo3(s) ® CuO(s) + Co2(g)

Extracts from this document...


Lewisham College Zahra Hussien As chemistry Assessor: Bernice Ferdinand Science investigation for OCR coursework As chemistry Title Which equation is correct? Introduction Copper carbonate can be exist in two forms; one is azurite is also known as basic copper carbonate and it is blue in colour, the other form of copper carbonate is called malachite and it has a distinctive green colour. The copper oxide that I used for my experiment is malachite. It is formed by action of carbon dioxide and water on copper sulphides or by action of copper solution on calcite. It is a hydrous carbonate of copper. Aim The aim of this investigation is determine which equation is correct. We need to decide what is given off after caring the experiment. We will do this by heating the copper oxide and look at the colour change after heating it. We need to calculate if the mass of copper oxide and the volume of gas given off from our investigation are equal to the hated mass of copper carbonate. ...read more.


3. Heat it gently using Bunsen burner. 4. Observe the colour change. I carry out the experiment after I saw the copper carbonate change from green to black. 5. I set up the clamp stands, gas syringe and Bunsen burner as shown in the diagram. 6. Weigh 0.4g of copper carbonate and transfer it into the boiling tube. 7. Fix the boiling tube and the gas syringe in to two different stands shown in the figure above. 8. Close the boiling tube with bung and connect the boiling tube and syringe by delivery tube. 9. Turn on the gas and light the Bunsen burner and heat the copper carbonate in the boiling tube. Keeps burning till all the metal turns black and the volume of carbon dioxide in the syringe stops moving. 10. Record the final volume of carbon dioxide. 11. After the boiling tube cold down remove the bang from the boiling tube and measure the mass of the black product we get after burning copper carbonate. ...read more.


* transfer error, when I transfer the copper carbonate into the boiling tube. * Measurement error. * Errors of transferring the black powder from the boiling tube. * Calculation error. * I was expecting to get 0.077dm3 of gas from the experiment but I get 0.061dm3 . in this case I get less volume of gas than I should be getting. This error might be due to one or two of the following reasons: * I took the final volume before the copper carbonate burns completely. * Problems of fixing the bung into the boiling tube. * From the above preliminary experimental result I got, I can say that equation 1 is correct. To confirm that the mass of copper carbonate I used in the beginning of the experiment has to be equal to the total mass of copper oxide and the volume of carbon dioxide. CuCO3(s) ? CuO(s) + CO2(ga) n3 = n1 Vo = m1 = m2 V3 M1 M2 > m3 = n3 x M3 m3 = 0.0032 x 44 m3 = 0.1408g > m1 = m2 + m3 m1 = 0.258g + 0.1408g m1 = 0. ...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

See related essaysSee related essays

Related GCSE Classifying Materials essays

  1. Copper has two oxides, Cu2O, and CuO. Copper carbonate, CuCO3 decomposes on heating to ...

    In this experiment, from the two equations given, it is possible to calculate how much gas would be given off by each. Avogadro's law states that 1 mole of any gas occupies 24dm3 at room temperature and pressure (rtp), so it is possible to calculate the volume of gas given off.

  2. Calcium carbonate reacts with dilute hydrochloric acid according to the equation below

    1 2 3 5 7 10 11 13 14 16 17 Conclusion As the percentage of hydrochloric acid is increased, the amount of gas produced by the reaction increases. At 100% there was more gas produced than at all of the other percentages below this.

  1. Thermal decomposition of Copper Carbonate (CuCo3).

    =...g Volume of carbon dioxide =...cm3 Calculation: In equation 1: Mass of CuCo3 =...g Molar mass of CuCo3 = 123.5g X/123.5 = ...moles No of mole of CuCo3 =...moles The ratio of CuCo3 to Co2 is 1:1 so No of moles of CuCo3 is = No of moles of Co2

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

    By seeing that copper is further down the series than zinc, we know that it is less reactive, and so will be displaced by the zinc. The reaction between zinc and copper sulphate is exothermic because overall more energy is given out (i.e.

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

    I repeated the investigation three times, which I think was enough as I had reading very similar each time showing that I had carried out the investigation in the same way all three times.

  2. material science unit 2 task 1

    the positive charge of the atoms' nuclei and the negative charge of their electrons. chemicals that bond using covalent bonding are usually gases or liquids at room temperature. e.g. Elements: chlorine (Cl), hydrogen (H) Compounds water (H2O), Hydrogen chloride (HCl), Ammonia (NH3).

  1. To investigate the thermal decomposition of copper carbonate and try to prove that the ...

    In my experiment if I can find the mass of copper oxide left over I can subtract that from the mass of copper carbonate + crucible + lid and that will give me the mass of carbon dioxide lost. If I change that into a percentage, I will have my result.

  2. Whats in the bottle?

    20/03/09 Presentation IR Spectroscopy Lesson Write-up IR Spectroscopy - What's in the Bottle? IR stands for Infra Red (this is part of the electromagnetic spectrum) It is used to identify functional groups in organic results. Alkanes - A hydrocarbon containing only simple C-C bonds.

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