Is Water a Liquid in the Decomposition of Copper (II) Hydroxide?

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In summary, the conversation discusses the decomposition reaction of copper (II) hydroxide into copper (II) oxide and water when heated. The water in this reaction can either be in the form of water vapor or liquid, depending on the temperature. The color change during the reaction indicates the removal of crystal water and the equation Cu(OH)_2.nH2O(s) \xrightarrow{heat} Cu(OH)_2(s)~+~nH_2O(g) is used to describe the reaction. It is noted that the hot water bath may not reach the temperature required for complete decomposition.
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honeyDew
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I need Helps... Decomposition Reaction WE

is this how you're supposed to write a decomposition reaction in a word equation?

Copper (II) hydroxide decomposes with heat into the copper (II) oxide and water

...so then the water in this one would be a liquid right?
 
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  • #2
honeyDew said:
...so then the water in this one would be a liquid right?
Assuming it is under the correct temperature, the water will be water vapour, thus, a gas.

The Bob (2004 ©)
 
  • #3
well we placed it into a hot water bath ...and constantly stirring it ... the color change so i guess it's gas ...right?
 
  • #4
honeyDew said:
well we placed it into a hot water bath ...and constantly stirring it ... the color change so i guess it's gas ...right?
What changed colour? The water?

The Bob (2004 ©)
 
  • #5
The colour change tells you that the [tex]Cu(OH)_2[/tex] has changed somehow chemically. Since the most likely change is dehydration that is what you should reasonably assume is what happened. Basically the [tex]Cu(OH)_2[/tex] was probably hydrated to some extent and what happened is that you have removed this crystal water by heating the hydrate. [tex]Cu(OH)_2.nH2O(s) \xrightarrow{heat} Cu(OH)_2(s)~+~nH_2O(g)[/tex] describes this reaction.

When the [tex]Cu(OH)_2[/tex] decomposes it leaves [tex]CuO[/tex] and [tex]H_2O[/tex]. The [tex]H_2O[/tex] will be released at temperatures of around [tex]185^{o}C[/tex] which is unlikely to be achieved in a hot water bath.
 
  • #6
oh I see now...thank you so much for your helps :)
 

FAQ: Is Water a Liquid in the Decomposition of Copper (II) Hydroxide?

What is a decomposition reaction?

A decomposition reaction is a type of chemical reaction in which a compound breaks down into simpler substances. This process is usually triggered by heat, light, or electricity and results in the formation of new products.

How does decomposition occur in HelpsDecomposition Reaction WE?

In HelpsDecomposition Reaction WE, decomposition occurs through the use of enzymes. These enzymes help break down complex compounds into smaller, more manageable molecules. This process is essential for the breakdown of organic matter and is important for nutrient cycling in ecosystems.

What are the products of HelpsDecomposition Reaction WE?

The specific products of HelpsDecomposition Reaction WE will depend on the substances being decomposed. However, common products include water, carbon dioxide, and inorganic compounds such as ammonia or nitrates.

How does decomposition benefit the environment?

Decomposition is an essential process for maintaining a healthy environment. It helps to break down dead organic matter, returning nutrients to the soil and allowing for new growth. It also helps to regulate the Earth's carbon cycle and reduce waste accumulation.

Are there any potential negative impacts of decomposition?

While decomposition is a natural and necessary process, it can have negative impacts if it occurs too quickly or in the wrong place. For example, excessive decomposition in bodies of water can deplete oxygen levels and harm aquatic life. Additionally, decomposition of certain materials, such as plastics, can release harmful chemicals into the environment.

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