Will hydrogen gas displace copper in a copper(II) chloride solution?

In summary, according to the reactivity series, copper is below hydrogen. This means that in theory, hydrogen gas should be able to displace copper in a copper(II) chloride solution if the gas is bubbled into the solution. This is confirmed by the fact that when solid CuCl2 is heated and hydrogen gas is passed over it, the reaction CuCl2 + H2 --> Cu + 2 HCl occurs, demonstrating that hydrogen gas is more reactive than copper. This is often the case with gases compared to solids.
  • #1
reventon_703
15
0
According to the reactivity series, copper is below hydrogen.
In theory, hydrogen gas should be able to displace copper in a copper(II) chloride solution should the gas be bubbled into the solution, is this true?
 
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  • #2
Is copper below hydrogen or hydrogen gas (H2)?
 
  • #3
Touche... it is hydrogen.
But how can I find out if hydrogen gas is more reactive than copper? Gases are often more unstable and reactive than solids is it not?
 
  • #4
I agree that Hydrogen is more reactive than Copper. Heat solid CuCl2 (below its temperature of decomposition) and pass H2 gas over it. I would expect:

CuCl2 + H2 --> Cu + 2 HCl
 
  • #5


Based on the reactivity series, hydrogen gas is more reactive than copper. This means that in a reaction between hydrogen gas and copper(II) chloride, the hydrogen gas will displace the copper and form hydrogen chloride. However, it is important to note that this reaction may not occur spontaneously and may require additional energy or a catalyst to proceed. Additionally, the concentration and temperature of the solution may also affect the reaction rate. Therefore, while it is theoretically possible for hydrogen gas to displace copper in a copper(II) chloride solution, the actual reaction may require certain conditions to be met in order to occur.
 

1. Will the hydrogen gas dissolve in the copper(II) chloride solution?

No, hydrogen gas is insoluble in water and will not dissolve in the copper(II) chloride solution.

2. What will happen when hydrogen gas is added to a copper(II) chloride solution?

When hydrogen gas is added to a copper(II) chloride solution, a displacement reaction will occur where the hydrogen gas will react with the copper(II) ions to form copper metal and release chloride ions into the solution.

3. How will the concentration of the copper(II) chloride solution change when hydrogen gas is added?

The concentration of the copper(II) chloride solution will decrease as the copper(II) ions are used up in the displacement reaction and form solid copper metal. However, the overall amount of dissolved ions in the solution will remain constant.

4. Can any other gas besides hydrogen be used to displace copper in a copper(II) chloride solution?

Yes, other reactive metals such as zinc or magnesium can also be used to displace copper in a copper(II) chloride solution.

5. Is it possible to reverse the reaction and turn the copper metal back into copper(II) ions in the solution?

Yes, by using a strong oxidizing agent such as nitric acid or chlorine, the copper metal can be oxidized back into copper(II) ions in the solution.

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