7) If an electrochemical reaction is spontaneous, a) cell potential is negative, and the more electronegative metal is the anode (oxidized) b) cell potential is negative, and the more electronegative metal is the cathode (reduced) c) cell potential is positive, and the more electronegative metal is the anode (oxidized) d) cell potential is positive, and the more electronegative metal is the cathode (reduced)

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**Electrochemistry Questions**

**7) If an electrochemical reaction is spontaneous:**

a) cell potential is negative, and the more electronegative metal is the anode (oxidized)  
b) cell potential is negative, and the more electronegative metal is the cathode (reduced)  
c) cell potential is positive, and the more electronegative metal is the anode (oxidized)  
d) cell potential is positive, and the more electronegative metal is the cathode (reduced)  

**8) Given the choice among Cu, Al, Fe, Ag, Sn, and Zn to create an electrochemical cell with the greatest standard potential, which two metals would you choose and why?**

a) Zn and Al, they are the two highest in the table  
b) Cu and Ag, they are the two lowest in the table  
c) Sn and Fe, they are in the center of the table  
d) Al and Ag, they are the most far apart in the table  

**9) What is the standard cell potential of a Mg and Ag electrochemical cell? (The reaction is spontaneous.)**

a) 3.17 V  
b) -3.17 V  
c) 1.57 V  
d) -1.57 V  

**10) Which is the oxidation half reaction for a Mg and Ag electrochemical cell? (The reaction is spontaneous.)**

a) \( \text{Mg}^{2+} + 2e^- \rightarrow \text{Mg(s)} \)  (Mg gains electrons)  
b) \( \text{Mg(s)} \rightarrow \text{Mg}^{2+} + 2e^- \)  (Mg loses electrons)  
c) \( \text{Ag}^+ + e^- \rightarrow \text{Ag(s)} \)  (Ag gains electrons)  
d) \( \text{Ag(s)} \rightarrow \text{Ag}^+ + e^- \)  (Ag loses electrons)
Transcribed Image Text:**Electrochemistry Questions** **7) If an electrochemical reaction is spontaneous:** a) cell potential is negative, and the more electronegative metal is the anode (oxidized) b) cell potential is negative, and the more electronegative metal is the cathode (reduced) c) cell potential is positive, and the more electronegative metal is the anode (oxidized) d) cell potential is positive, and the more electronegative metal is the cathode (reduced) **8) Given the choice among Cu, Al, Fe, Ag, Sn, and Zn to create an electrochemical cell with the greatest standard potential, which two metals would you choose and why?** a) Zn and Al, they are the two highest in the table b) Cu and Ag, they are the two lowest in the table c) Sn and Fe, they are in the center of the table d) Al and Ag, they are the most far apart in the table **9) What is the standard cell potential of a Mg and Ag electrochemical cell? (The reaction is spontaneous.)** a) 3.17 V b) -3.17 V c) 1.57 V d) -1.57 V **10) Which is the oxidation half reaction for a Mg and Ag electrochemical cell? (The reaction is spontaneous.)** a) \( \text{Mg}^{2+} + 2e^- \rightarrow \text{Mg(s)} \) (Mg gains electrons) b) \( \text{Mg(s)} \rightarrow \text{Mg}^{2+} + 2e^- \) (Mg loses electrons) c) \( \text{Ag}^+ + e^- \rightarrow \text{Ag(s)} \) (Ag gains electrons) d) \( \text{Ag(s)} \rightarrow \text{Ag}^+ + e^- \) (Ag loses electrons)
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