7. For the following cell: Cu(s)|Cu2+(0.0250M)||Fe3+(0.150M), Fe2+(0.0380M)|Pt(s). E°(Cu2+→Cu) = 0.34 V, E°(Fe3+→Fe2+) = 0.77 V (10 points) (A) Write the oxidation and reduction half-reactions. (B) Calculate the cell potential, Ecell at 25oC, and tell if the cell reaction is spontaneous.

8. Butadiene reacts to form its dimer according to the equation: (10 points) 2C4H6(g) → C8H12(g). The following results were collected: Time (s) 0 1000 1800 2800 3600 [C4H6] (mol/L) 0.01000 0.00625 0.00476 0.00370 0.00313 (A) Tell if the reaction is first order or second order according to these data.

7. For the following cell: Cu(s)|Cu2+(0.0250M)||Fe3+(0.150M), Fe2+(0.0380M)|Pt(s). E°(Cu2+→Cu)
= 0.34 V, E°(Fe3+→Fe2+) = 0.77 V (10 points)
(A) Write the oxidation and reduction half-reactions.
(B) Calculate the cell potential, Ecell at 25oC, and tell if the cell reaction is spontaneous.

相關申論題

相關試卷