Question

Question

Cell notation will list each half-reaction with stoichiometry:

Select the correct answer below:

-identical to the balanced overall redox reaction

-equal to 12 of the balanced overall redox reaction

-corresponding to the most reduced form of each half-reaction

-none of the above

Answer 1

Cell notation, in electrochemistry, is a shortcut technique to write the overall cell reaction. The two half cells (anode and cathode) are separated by two slashes representing a salt bridge; the anode is written first on the left followed by the cathode on the right. To understand the concept, consider the voltaic cell Zn/Sn2 constructed by the combination of two half cells Sn/Sn" and Zn/Zn2-. The balanced half-cell reactions of the Zn/Sn voltaic cell are as follows Oxidation half-reaction: Zn(s)->Zn (aa)+2e Reduction half-reaction Sn2 (a)2e-Sn(s) Thus, adding the two half-cell reactions, i.e. equation (1) and (2), the overall cell reaction is given as follows Zn(s)+Sn2 (a)-Zn2 (aq)+Sn (s) The cell notation of the voltaic cell will be as follows Therefore, cell notation will list each half cell-reaction with stoichiometry corresponding to the most reduced form of each half-reaction