electrochemistry dpp problem questions...
Answers
Answer:
. What is the difference between an oxidation-reduction reaction and a half-reaction?
Answer
Oxidation-reductions reactions always have an electron transfer from the oxidized species to the reduced species. When the oxidized species is separated from the reduced species, a balanced reaction can be written for each process (oxidation or reduction) that is called a half-reaction. All half-reactions must have electrons either as reactants (for reduction half-reactions) or products (for oxidation half-reactions).
2. What is the function of the salt bridge in an electrochemical cell?
Answer
The salt bridge completes the electrical circuit between the anode and cathode half–;cells. An effective salt bridge conducts current using ions (from an ionic salt) and not electrons.
Explanation: