Don't know how to do this stoichiometric problem with 4 questions.

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SUMMARY

The discussion centers on a stoichiometric problem involving copper compounds, specifically the relationship between copper oxide (CuO) and copper hydroxide (Cu(OH)2). The user initially confuses CuO with Cu(OH)2, questioning the origin of CuO in the reaction. It is clarified that Cu(OH)2 decomposes into CuO and water (H2O), while CuO does not react with water. This highlights the importance of understanding the chemical properties and reactions of these compounds in stoichiometry.

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  • Basic understanding of stoichiometry
  • Familiarity with chemical reactions and decomposition
  • Knowledge of copper compounds, specifically CuO and Cu(OH)2
  • Ability to interpret chemical equations
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Homework Statement



attached
http://imgur.com/CiUX9


Homework Equations



n/a

The Attempt at a Solution



I got the first 3 answers. But I don't know what this is asking for. What is CuO. Where did that come from. Is \n't it supposed to be Cu(OH)2?
 

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[itex]CuO + H_2O \rightarrow Cu(OH)_2[/itex]
It is just hydrated form, nothing to worry about.
 
I would put it as

Cu(OH)2 -> CuO + H2O

copper hydroxide easily decomposes, but copper oxide doesn't react with water.
 

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