Question

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Answer 1

1.An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

2.The pair of an oxidizing and reducing agent that are involved in a particular reaction is called a redox pair. A redox couple is a reducing species and its corresponding oxidizing form, e.g., Fe 2+

3.In electrochemistry, standard electrode potential is defined as the measures the individual potential of reversible electrode at standard state with ions at an effective concentration of 1mol dm−3 at the pressure of 1 atm.