Thermal stabilities of metal carbonates

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  • Created by: Katy **
  • Created on: 23-04-14 15:54

To investigate thermal stabilities of a metal carbonate:

  • HEAT metal carbonate
  • limewater produced

Sodium carbonate Na2CO3:

  • HEAT Na2CO3
  • bubbles seen in limewater (slowly)
  • limewater not turn milky
  • bubbles stop → NaCO3 not decompose when HEATED

(air in tube expands when heated = bubbles)

  • thermally stable

Copper II carbonate CuCO3:

  • green soild
  • HEAT CuCO3
  • bubbles seen in limewater
  • limewater not turn mliky
  • solid stays green

(air in

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