Question

A. Fe (s) | Fe$^{3+}$ (aq) || Mg$^{2+}$ (aq) | Mg (s) B. Pb (s) + Au$^{3+}$ (aq) $\to$ Au (s) + Pb$^{2+}$ (aq) C. Cr$_2$O$_7^{2-}$ (aq) + NO (g) $\to$ NO$_3^{-}$ (aq) + Cr$^{3+}$ (aq)

          A. Fe (s) | Fe$^{3+}$ (aq) || Mg$^{2+}$ (aq) | Mg (s)
B. Pb (s) + Au$^{3+}$ (aq) \(\to\) Au (s) + Pb$^{2+}$ (aq)
C. Cr$_2$O$_7^{2-}$ (aq) + NO (g) \(\to\) NO$_3^{-}$ (aq) + Cr$^{3+}$ (aq)

A. Fe (s) | Fe^3+ (aq) || Mg^2+ (aq) | Mg (s)
B. Pb (s) + Au^3+ (aq) → Au (s) + Pb^2+ (aq)
C. Cr2O7^2- (aq) + NO (g) → NO3^- (aq) + Cr^3+ (aq)

Added by Mercedes T.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Madhur L

12/18/2022

Step 1

Fe(s) -> Fe^(3+)(aq) + 3e^- Mg^(2+)(aq) + 2e^- -> Mg(s) B. Pb(s) -> Pb^(2+)(aq) + 2e^- Au^(3+)(aq) + 3e^- -> Au(s) C. Cr2O7^2-(aq) + 14H^+ + 6e^- -> 2Cr^(3+)(aq) + 7H2O(l) 3NO(g) + 4H^+ + 3e^- -> NO3^-(aq) + 2H2O(l) Show more…

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Calculate the electrochemical potential, E˚, for the following cells/reactions under standard conditions. Indicate whether each is spontaneous as written. A. Fe(s)|Fe^(3+)(aq)||Mg^(2+)(aq)|Mg(s) B. Pb(s)+Au^(3+)(aq)->Au(s)+Pb^(2+)(aq) C. Cr_(2)O_(7)^(2-)(aq)+NO(g)->NO_(3)^(-)(aq)+Cr^(3+)(aq) A. Fe (s) Fe3+(aq) II Mg2+(aq) Mg (s) B. Pb(s)+Au3+(aq)> Au(s)+Pb2+(aq) C. Cr2O72-(aq) + NO (g) > NO3-(aq) + Cr3+(aq)