In a spontaneous reaction containing the Cu^2+ + 2e^- rightarrow Cu half reactio
ID: 535272 • Letter: I
Question
In a spontaneous reaction containing the Cu^2+ + 2e^- rightarrow Cu half reaction and the Pb^2+ + 2 e^- rightarrow Pb half reaction, what is the reducing agent assuming standard conditions? A) Cu^2+ B) Pb C) Pb^2+ D) Cu A salt is dissolved in an exothermic solution process. Which of the following is true? (|delta H| refers to the absolute value) A) delta H_lattice > 0, delta H_hydration > 0, |delta H_lattice| |delta H_hydration| C) delta H_lattice > 0, delta H_hydration |delta H_hydration| D) delta H_lattice > 0, delta H_hydrationExplanation / Answer
1. B, Since Pb has low reduction potential than Cu hence it acts as strong reducing agent
2. B, since it is exothermic reaction ,energy will release hence lattice energy is less than zero.