University:
Boston University
Course:
CAS CH 101 | General Chemistry 1
Academic year:

2023
Views:

74

Pages:

2
Author:

Emerson Gould

Cu(s) is oxidized to Cu2+(aq) by oxygen gas in a basic solution. Hint: Remember to balance oxygens using water. [E°red (Cu2+/Cu) = 0.34V, E°red (O2/OH–) = 0.40V]. 1. (3 points) Write the balanced net chemical reaction in basic media. 2 Cu (s) + 2 H2O (l) + O2 (g)  2 Cu2+ (aq) + 4 OH- (aq) 2. (2 points) Calculate E°cell. Eºcell = 0.40 – 0.34 = 0.060V R or W E°cell 0.060V 3. (4 points) Write the line notation for this reaction. Be sure to include phases. Cu (s) | Cu2+ (aq) || O2 (g) | OH- (aq) | Pt (s) 4. (1 point) For each of the following, circle each relation that must be true. a. If Q = 1, then … R or W E<0 E=0 E>0 Eo = E 1 E > Eo E < Eo Friday: Fe(s) is oxidized to Fe2+(aq) by oxygen gas in a basic solution. Hint: Remember to balance oxygens using water. [E°red (Fe2+/Fe) = -0.44V, E°red (O2/OH–) = 0.40V]. 1. (3 points) Write the balanced net chemical reaction in basic media: 2 Fe (s) + 2 H2O (l) + O2 (g)  2 Fe2+ (aq) + 4 OH- (aq) 2. (2 points) Calculate E°cell. Eºcell = 0.40 – (-0.44) = 0.84V R or W E °cell 0.84V 3. (4 points) Write the line notation for this reaction. Be sure to include phases. Fe (s) | Fe2+ (aq) || O2 (g) | OH- (aq) | Pt (s) 4. (1 point) For each of the following, circle each relation that must be true. b. If Q = 1, then R or W … E<0 E=0 E>0 2 Eo = E E > Eo E < Eo V