How to Calculate Eº for 2Cu⁺(aq) → Cu²⁺(aq) + Cu(s)?

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In summary, E0 refers to the standard electrode potential and is a measure of a species' tendency to gain or lose electrons. The negative value for the reaction Cu+ => Cu2+ + 1e- indicates that it is spontaneous. E0 values are determined experimentally using a reference electrode. This reaction is relevant in electrochemistry as it involves electron transfer and the E0 value can predict the direction and feasibility of a reaction. The E0 value can change under different conditions such as temperature, concentration, and pressure.
  • #1
An1MuS
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Given E[tex]^{0}[/tex]=0,52V for

Cu[tex]^{+}[/tex](aq) + e[tex]^{-}[/tex] --> Cu(s)

Calculate E[tex]^{0}[/tex] for the following reaction at 25ºC, 1atm.

2Cu[tex]^{+}[/tex](aq) --> Cu[tex]^{2+}[/tex](aq) + Cu(s)

Any ideas?
 
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  • #2


Is that all the data you're given? Don't you need the E[tex]^{0}[/tex] for Cu+ => Cu2+?
 
  • #3


While doing these exercises we can check the standart potential reduction table.

E0 for Cu+ => Cu2+ + 1e- is -0,15V

What would you do then?
 

FAQ: How to Calculate Eº for 2Cu⁺(aq) → Cu²⁺(aq) + Cu(s)?

What is E0 for Cu+ => Cu2+ + 1e-?

E0 refers to the standard electrode potential, which is a measure of the tendency of a species to gain or lose electrons. In this reaction, Cu+ is being oxidized to Cu2+ and losing one electron.

Why is the value for E0 for Cu+ => Cu2+ + 1e- negative?

The negative value indicates that this reaction is spontaneous and has a tendency to proceed in the direction shown. This means that the Cu+ ion has a higher tendency to lose an electron and become Cu2+ compared to the reverse reaction.

How is E0 determined for this reaction?

E0 values are determined experimentally by measuring the voltage of a cell containing the species involved in the reaction. The standard hydrogen electrode is used as a reference electrode to measure the potential difference.

Why is this reaction relevant in electrochemistry?

This reaction is relevant in electrochemistry because it involves the transfer of electrons, which is the basis of all chemical reactions involving electricity. The E0 value can be used to predict the direction and feasibility of a reaction and is important in designing and understanding electrochemical cells.

Can the E0 value change under different conditions?

Yes, the E0 value can change under different conditions such as temperature, concentration, and pressure. These factors can affect the thermodynamics of the reaction, which in turn can alter the E0 value.

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