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

Which oxide is formed when copper carbonate decomposes.

Extracts from this document...

Introduction

Introduction Aim Copper has two oxides, namely, CuO and Cu2O. Copper carbonate, CuCO3 decomposes on heating to form one of these oxides and an equation can be written for each possible reaction: Equation 1: 2CuCO3 (s) Cu2O (s) + 2CO2 (g) + 1/2O2 (g) Equation 2: CuCO3 (s) CuO (s) + CO2 (g) Our aim for the investigation is to find out which of the two equations above is correct and which oxide is formed when copper carbonate decomposes. Using the mole theory, an experiment is to be designed to measure the volume of gas, which will hence prove that which is the correct equation for the practical. The students also have to determine the quantities of reagents to be used in the experiment. Background Information Copper is a transition metal. It is found abundantly at many locations as a primary mineral in basaltic lavas and also as reduced from copper compounds. Copper pure is very malleable and ductile and can be rolled into sheets, hammered into thin leaves, and drawn into wire. ...read more.

Middle

so the amount of gas does not exceed 100 cm3. Due to this I have decided to use 0.5g of copper carbonate (CuCO3). Equation 1 2CuCO3 (s) Cu2O (s) + 2CO2 (g) + 1/2O2 (g) Mass of CuCO3 = 0.4g Molar Mass of CuCO3 = 63.5 + 12 + (16 * 3) = 123.5 g mol-1 ?Number of Moles of CuCO3 = mass of CuCO3 / molar mass = 0.4g / 123.5 g mol-1 = 0.00324 mols Molar Ratio = CuCO3 : CO2 = 2 : 2 = 1:1 Molar Ratio = CuCO3 : O2 2 : 1/2 ?Number of moles of CO2 = 0.00324 mols (3 sig. Fig) Volume of CO2 produced = number of moles of CO2 * 24000 cm3 = 0.00324 mols * 24000 cm3 = 77.7 cm3 (3 sig. Fig) ?Number of moles of O2 = 0.00324 / 4 = 0.0008097 mols Volume of O2 produced = number of moles of O2 * 24000 cm3 = 0.0008097 mols * 24000 cm3 = 19.4 cm3 (3 sig. ...read more.

Conclusion

Take the empty small beaker and put it on the digital weighing scale and bring the reading to 0.00. Then, using the spatula put 0.4g of copper carbonate in the beaker. 3) Pour copper carbonate into the test tube and close the mouth of the test tube using a rubber bung. Ensure that the delivery tube is attached firmly in the rubber bung. 4) Make sure that the gas syringe is at 0 cm3 and that the delivery tube is securely fastened to the end of the syringe. 5) Turn the Bunsen burner on putting it on a yellow - orange flame. Then bring the tube near the Bunsen burner using the tongs and turn the flame to blue. Start heating the test tube. Using the tongs prevents your fingers from burning. 6) Wait for a reaction to take place. 7) As a reaction starts to take place, gas will be formed and the gas syringe will start moving indicating the volume of gas that has been formed. The reaction will stop when the gas stops forming. This will be indicated clearly when the gas syringe stops moving. 8) The total volume of gas formed can now be recorded in the results table along with any other observations. 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 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. Marked by a teacher

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

    If they wanted something stronger, they have the option of buying bags that aren't made of plastic such as the 'Tesco bag for life'. It would possibly help if there were more recycling bins put in place in public areas such as parks, shopping centres etc, as many people may

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

    Cu2O (s) + 2CO2 (g) + 1/2 O2 (g) Mr of CuCO3 is 123. 1 mole of any gas occupies 24dm3 (rtp) 2 moles CuCO3 (r) 2.5 moles of gas, ie 60dm3 247g CuCO3 (r) 60 000cm3: 0.1g CuCO3 (r) 24.291... = 24.29cm3 (2dp) Equation 2: CuCO3 (s) (r)

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

    Mass (g) Change in mass (g) Mass (g) Change in mass (g) Mass (g) Change in mass (g) 0 58.27 0.00 60.17 0.00 61.51 0.00 15 58.15 0.12 60.16 0.01 61.49 0.02 30 58.13 0.14 60.15 0.02 61.47 0.04 45 58.09 0.18 60.11 0.06 61.44 0.07 60 58.04 0.23 60.09 0.08 61.41 0.10 75 58.01 0.26 60.05 0.12

  2. Thermal Decomposition of copper carbonate

    Apparatus 1. Heat proof mat 2. Bunsen burner 3. Boiling tube 4. Bung 5. Gas delivery tube 6. Gas syringe 7. Top balance scale 8. 1g of copper carbonate 9. Safety goggles 10. Laboratory coat 11. Measuring boat Method 1.

  1. Free essay

    Periodic table

    As there is a greater chance of these types of disorders appearing in males it is often called a sex-linked disorder. Mutations Mutations are caused by an alteration to genes. Mutations can occure in a single gene - genetic mutation or in a chromosome -called a chromosomal mutation.

  2. should salt be banned?

    "You can certainly see even subtle changes in iodine can affect IQ," Karl tells WebMD. "Iodine is critical in the first years of life, extraordinarily important up to 3 or 5 years of age." Children in financially stressed families are likely at highest risk.

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

    I will be dealing with scorching hot materials and want to reduce the risk of being burnt as much as possible. I will have to remain diligent throughout the experiment. In this experiment, my input variable will be the mass of copper carbonate being heated.

  2. chemistry open book:formation of natural and synthetic rubber

    The carbon black particles gives tyres there black colour and the size of these particles determine how effective the addition of carbon black is.

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