Ascorbate and copper ions have the following electrochemical potentials: Dehydroascorbate+2H++2e−→Ascorbate ε∘′=+0.08V Cu2++e−→Cu+ ε∘′=+0.159V 10 mL of...

Ascorbate and copper ions have the following electrochemical potentials:

Dehydroascorbate+2H⁺+2e⁻→Ascorbate ε^∘′=+0.08V

Cu²⁺+e⁻→Cu⁺ ε^∘′=+0.159V

10 mL of a 0.02 M solution of ascorbate in a buffered solution at pH7 at 25∘C is mixed with 10 mL of 0.02 M of Cu²⁺. Figure out the equilibrium concentration of dehydroascorbate, ascorbate, Cu²⁺, and Cu⁺.

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Expert Solution

Usin E^O values of half cell reactions E^o value for the complete cell reaction is calculated and with the help of this value

Equilibrium constant for the reaction is calculated . Now with the help of this equilibrium constant concentration of various

species is calculated at pH 7 as shown in images

queen_honey_blossom answered 1 year ago

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