• 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

# 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

# Related GCSE Classifying Materials essays

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

it again, so is better to preserve the amount of crude oil for more important uses with no alternatives (such as different packaging). It takes up to a thousand years for a single plastic bag to degrade, and as it degrades tiny particles of toxic chemicals are released into soil and water.

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

61.38 0.13 90 57.98 0.29 60.03 0.14 61.35 0.16 105 57.94 0.33 60.01 0.16 61.34 0.17 120 57.91 0.36 59.98 0.19 61.32 0.19 Mass of marble chips: 10.01g Mass of marble chips: 10.00g Mass of marble chips: 10.01g Time (seconds)

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

% of CO2 lost grams 0.2 14.56 14.76 14.96 14.90 0.13 0.07 35% 0.4 14.32 14.73 15.22 15.10 0.27 0.13 32.5% 0.6 13.61 14.21 14.81 14.62 0.41 0.19 32.2% 0.8 13.13 13.93 14.73 14.45 0.52 0.28 35% 1.0 15.25 16.25 17.26 16.93 0.67 0.33 33% Average Table All the percentages in the average column fit my prediction perfectly.

1. ## Periodic table

Different animals have different sex chromosomes e.g. male birds have two Z chromosomes and female birds have Z and W sex chromosomes. Twins - twins are born when clusters of cells form during the very early stages of cell division these clusters of cells eventually form two separate individuals hence twins are born.

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

Also producing rubber from reclaim uses less energy than producing from raw material, this conserves non-renewable fuel. Reference: Figure 1 Chemical ideas, Second Edition, Salters Advanced Chemistry, by George Burton, john Holman, john Lazonby, Gwen Pilling and David Waddington. Pg 109 Figure 2.

1. ## Thermal Decomposition of copper carbonate

Laboratory coat 11. Measuring boat Method 1. First weigh 1g of copper carbonate in the measuring boat on the top balance scale. Then weigh the measuring boat on its own. Take away the weight of the measuring boat from the copper carbonate and record the values in table 1 2. Set up the apparatus as shown 3.

2. ## should salt be banned?

That's about 1 teaspoon of salt. Just think how salty your favorite snacks taste. Eat too many salty foods (even soft drinks have sodium), and you easily go overboard. Truth About Iodized Salt Is the salt in your kitchen salt iodized?

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