Question

1. Propane is used as a fuel source on many barbeque grills. What is undergoing reduction during the burning of propane while grilling?

1. CH₃CH₂CH₃
2. O₂
3. CO₂

2. Based on the reduction potential data, what is the standard cell potential for the following electrochemical cell reaction: Zn(s) + Cu²⁺(aq) à Zn²⁺(aq) + Cu(s)

E°_red = -0.763 V for Zn²⁺(aq) + 2e^- à Zn(s)

E°_red = +0.340 V for Cu²⁺(aq) + 2e^- à Cu(s)

1. +1.103 V
2. -0.423 V
3. +0.423 V

3. What is the ∆G°_rxn for a 2 electron transfer electrochemical cell with a standard cell potential of +0.770 V.

1. -74.3 kJ/mol
2. -149 kJ/mol
3. +74.3 kJ/mol

4. Based on the following reduction potential data, what is the ∆G°_rxn for the following electrochemical cell reaction: Zn(s) + Cu²⁺(aq) à Zn²⁺(aq) + Cu(s)?

E°_red = -0.763 V for Zn²⁺(aq) + 2e^- à Zn(s)

E°_red = +0.340 V for Cu²⁺(aq) + 2e^- à Cu(s)

1. +106 kJ/mol
2. -106 kJ/mol
3. -213 kJ/mol

5. Which of the following acids is a strong oxidant?

1. HCl
2. HNO₃
3. HI