Friday, March 18, 2011

Chemistry Form 4: Chapter 3 - Experiment of Copper Oxide Empirical Formula

  • Dry hydrogen gas must be passed through the combustion tube for a few minutes to remove all the air before heating the copper oxide.
  • While heating the oxide, dry hydrogen is passed through continuously and excess of hydrogen gas must be burnt to prevent oxygen gas from the air oxidize the hot copper.
Black copper oxide

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