Transcript Malachite investigation flow charts

Summary of the malachite investigation
and experiments on copper compounds
malachite
copper (II) carbonate
(green)
Heating malachite and testing the gas produced
clamp
malachite
heat
delivery tube
Limewater
(calcium
hydroxide
solution)
copper (II) carbonate  copper (II) oxide + carbon dioxide (g)
CuCO3 (s)
 CuO (s)
+ CO2 (g)
Decomposition - copper (II) carbonate broken down to simpler
substances
Summary of the malachite investigation
and experiments on copper compounds
malachite
copper (II) carbonate
(green)
[heat]
carbon dioxide
copper (II)
oxide
(black)
Reduction of ‘heated malachite’ powder with charcoal
crucible + lid
pipeclay triangle
mixture of charcoal
and solid left after
heating malachite
heat
copper (II) oxide (s) + carbon (s, charcoal)  copper (s) + carbon dioxide (g)
2 CuO (s)
+ C (s, charcoal)  2 Cu (s) + CO2 (g)
Copper (II) oxide is reduced to copper (oxygen removed).
Carbon is oxidised to carbon dioxide (oxygen gained).
Summary of the malachite investigation
and experiments on copper compounds
malachite
copper (II) carbonate
(green)
carbon dioxide
[heat]
carbon dioxide
copper (II)
oxide
(black)
[charcoal, heat]
Copper
(pink)
Reduction of copper (II) oxide by methane (start)
excess
methane
burnt
methane
heat
copper (II)
oxide
copper (II) oxide (s) + methane (g)  copper (s) + carbon dioxide + water (g)
4 CuO (s) + CH4 (g)  Cu (s) + CO2 (g) + 2 H2O (g)
Copper (II) oxide is reduced to copper.
Methane is oxidised to carbon dioxide and water.
Reduction of copper (II) oxide by methane (end)
excess
methane
burnt
methane
copper
copper (II) oxide (s) + methane (g)  copper (s) + carbon dioxide + water (g)
4 CuO (s) + CH4 (g)  Cu (s) + CO2 (g) + 2 H2O (g)
Copper (II) oxide is reduced to copper.
Methane is oxidised to carbon dioxide and water.
Summary of the malachite investigation
and experiments on copper compounds
malachite
copper (II) carbonate
(green)
carbon dioxide
[heat]
carbon dioxide
copper (II)
oxide
(black)
[charcoal, heat]
Copper
(pink)
[methane, heat]
carbon dioxide
+ water vapour
Preparation of copper (II) sulphate
beaker
dilute sulphuric acid
glass rod
copper (II) oxide
heat
sulphuric acid (aq) + copper (II) oxide (s)  copper (II) sulphate (aq) + water (l)
H2SO4 (aq)
+ CuO (s)
 CuSO4 (aq)
+ H2O (l)
filter paper
copper (II) oxide (s) and
copper (II) sulphate (aq)
mixture
filter funnel
evaporating dish
copper (II) sulphate
solution (filtrate)
Summary of the malachite investigation
and experiments on copper compounds
malachite
copper (II) carbonate
(green)
[heat]
carbon dioxide
water
copper (II)
sulphate
(blue)
[dil. sulphuric acid]
carbon dioxide
copper (II)
oxide
(black)
[charcoal, heat]
Copper
(pink)
[methane, heat]
carbon dioxide
+ water vapour
Preparation of copper (II) sulphate
beaker
dilute sulphuric acid
glass rod
copper (II) carbonate
heat
sulphuric acid (aq) + copper (II) carbonate (s) 
copper (II) sulphate (aq) + water (l) + carbon dioxide (g)
H2SO4 (aq) + CuCO3 (s)  CuSO4 (aq) + H2O (l) + CO2 (g)
filter paper
copper (II) carbonate (s) and
copper (II) sulphate (aq)
mixture
filter funnel
evaporating dish
copper (II) sulphate
solution (filtrate)
Summary of the malachite investigation
and experiments on copper compounds
[dil. sulphuric acid]
carbon dioxide,
water
copper (II)
sulphate
(blue)
malachite
copper (II) carbonate
(green)
[heat]
carbon dioxide
water
[dil. sulphuric acid]
carbon dioxide
copper (II)
oxide
(black)
[charcoal, heat]
Copper
(pink)
[methane, heat]
carbon dioxide
+ water vapour
Electrolysis of copper (II) sulphate solution
graphite anode
(+)
graphite cathode
(-)
electrodes
copper (II) sulphate (aq)
copper (II) sulphate (aq) + water (l)  copper (s) + oxygen (g) + sulphuric acid (aq)
CuSO4 (aq) +
H2O (l)  Cu (s) + O2 (g) + H2SO4 (aq)
Summary of the malachite investigation
and experiments on copper compounds
malachite
copper (II) carbonate
(green)
[dil. sulphuric acid]
carbon dioxide,
water
copper (II)
sulphate
(blue)
[heat]
carbon dioxide
water
[dil. sulphuric acid]
carbon dioxide
copper (II)
oxide
(black)
[charcoal, heat]
[electrolysis]
sulphuric acid,
oxygen
Copper
(pink)
[methane, heat]
carbon dioxide
+ water vapour