Understanding Electrochemical Cells and their Notations in Chemistry.

Write the cell notation for each of the electrochemical cells described below. Remember to include passive electrodes if gases are present.a. 2 Ag^+ (aq) + Pb (s) → 2 Ag (s) + Pb^2+ (aq)b. 2 ClO2 (g) + 2 I^- (aq) → 2 ClO2^- (aq) + I2 (s)c. Ni^2+ (aq) + Mg (s) → Ni (s) + Mg^2+ (aq)

a. Pb(s)|Pb^2+(aq)||Ag^+(aq)|Ag(s)b. Pt(s)|I^-(aq)|I(s)||ClO2(g)|ClO2^-(aq)|Pt(s)c. Mg(s)|Mg^2+(aq)||Ni^2+(aq)|Ni(s)

a. The cell notation for the given electrochemical cell is:

Pb(s) | Pb^2+(aq) || Ag^+(aq) | Ag(s)

Note that the anode is Pb(s) and the cathode is Ag(s).

b. The cell notation for the given electrochemical cell is:

Pt(s) | I^-(aq) || ClO2(g) | ClO2^-(aq), I2(s)

Note that since ClO2(g) is a gas, it is represented by a Pt electrode as a passive electrode. The anode is I^-(aq) and the cathode is ClO2^-(aq) on the Pt electrode.

c. The cell notation for the given electrochemical cell is:

Mg(s) | Mg^2+(aq) || Ni^2+(aq) | Ni(s)

Note that the anode is Mg(s) and the cathode is Ni(s).

More Answers:

Calculating Standard Free Energy Change and Equilibrium Constant for a Redox Reaction Involving Nickel and Chromate Ions
Calculating Standard Reduction Potential for In+/In3+ Half-Cell Using Nernst Equation

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