Question

Ascorbate and Cu ions have the following electrochemical potentials;

Dehydroascorbate + 2H⁺ + 2e^- --> Ascorbate E^o' = +0.08V

Cu²⁺ + e^- --> Cu⁺   E^o' = 0.159 V

10 mL of a 0.02M solution of ascorbate in a buffered solution at pH 7.0; 25 degrees Celsius is mixed with 10mL of 0.02 M of Cu²⁺.

Write a balanced chemical equation for the reaction, and figure out the equilibrium concentration of dehydroascorbate, ascorbate, Cu²⁺, and Cu⁺.

Answer 1