Complete Solutions
A cathode correct answer: is an electrode where reduction
occurs
In an electrochemical cell based on the following reaction
Zn(s) + Cu2+(aq) ⟶ Zn2+(aq) + Cu(s)
Which species acts as the anode? correct answer: Zn(s)
In the reaction
Mg(s) + 2 Ag+(aq) ⟶ Mg2+(aq) + 2 Ag(s)
What is the reduction half-reaction? correct answer: 2 Ag+(aq)
+ 2e- ⟶ 2 Ag(s)
When paired with the anode half-reaction
Co(s) ⟶ Co2+(aq) + 2 e-; E° = -0.28 V
Which of the following cathode half-reactions will create a
spontaneous cell reaction in the forward direction? correct
answer: Sn2+(aq) + 2 e- ⟶ Sn(s); E° = -0.1375 V
A redox reaction with a negative ΔG° will correct answer: have
a positive ΔE°cell and will be spontaneous under standard
conditions
The cell reaction
Zn(s) + 2 MnO2(s) ⟶ ZnO(s) + Mn2O3(s)
Is representative of which type of battery chemistry? correct
answer: Alkaline