CARBON DIOXIDE CHEMISTRY 5

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					2004


CARBON DIOXIDE CHEMISTRY 5

(d) ….. copper (II) carbonate:

                                 CuCO3 + H2SO4

(e) ….. sodium carbonate:

                                 Na2CO3 + H2SO4

(f) ….. sodium hydrogencarbonate:

                                 ..NaHCO3 + H2SO4

Conclusion

       a… + c……..         →        s… + w…. + c….. d……

Experiment 4

Carefully heat a little of the following carbonates in clean, dry semi-micro test tubes.
Test any fumes produced with limewater. Name and note the colour of the residue.
Write an equation for any reaction. Which one of these carbonates does not
decompose, and why doesn’t it?

   (a) ….. sodium carbonate:

   (b) ….. calcium carbonate:

   (c) ….. zinc carbonate:

   (d) ….. copper (II) carbonate:


Conclusion



Thermal decomposition provides evidence that en….. is needed to break chemical
bonds. i.e. such reactions are en……… .




HB Chem Carbon Dioxide Chemistry 5