QUESTION A voltaic cell (same as a galvanic cell) is created from a Cu/Cu2+ half-cell (E°red - +0.34 V) and an Al/AI3+ half-cell (E°red --1.66 V). Calculate the value of AG° for this cell. OA 1.16 x 106J O B. -193000 J O C. -764000 J O D.-1158000 kJ O E. 193000 J

The two redox half reactions represented below are combined to create a galvanic cell. Which statements are true regarding this cell? Select all that apply. 2 H+ (aq) + 2 e= H₂(g) Eº = 0.00 V La³+ (aq) + 3 e La(s) Eº = -2.38 V Three electrons are transferred in the overall, balanced reaction for the cell. La³+ is reduced to La(s) at the cathode. The overall, standard cell potential is 2.38 V. La³+ is produced at the anode. H₂(g) is produced at the cathode. La(s) is the oxidizing agent.

For the voltaic cell, A/B Ecell = 0.4V A is connected to the black electrode (A/A²+):(B/B²+) What is the reduction equation for this cell? A. B²+ + 2e → B B. B B²+ + 2e C. A²+ + 2e. → A D. A → A²+ + 2e E. none of these

Find the FALSE statement about the voltaic cell based on the two reduction half- reactions shown below. The concentrations of the ions are [Al3+] = 0.01 M, [Mn2*] = 0.1 M. A13+(aq) + 3e¯ - Al(s) E°red = -1.66 V Mn2+(aq) + 2e - Mn(s) E°red = -1.18 V Al(s) is a stronger reducing agent than Mn(s) The observed cell potential is 0.49V For the balanced equation, n = 6 and Q = [AI³+]/ [Mn2+]. Using base 10, logQ = -1. The shorthand diagram for this cell is Al(s) | AI3*(aq) || Mn²*(aq) | Mn(s).

Determine the reduction/oxidation reactions and the rest of the textbook question

Consider a galvanic cell based in the reaction Fe2+ + Cr,O,→ Fe³+ + Cr³* . Cr,03- + 14H* + 6e¯ →2Cr+ + 7H,0 1.33 Fe+ + e→ Fe?+ 0.77 Balance the reaction. What is the coefficient of Fe3+ in the balanced equation? а. 3 b. 6 с. 4 d. 2 e. none of these

half-cell and a are 0.0530 M MISSED THIS? Read Section 20.6 (Page). A voltaic cell consists of a Pb/Pb²+ Cu/Cu²+ half-cell at 25 °C. The initial concentrations of Pb²+ and Cu²+ 2+ and 1.70 M, respectively. What is the initial cell potential? Express your answer using two significant figures. ►View Available Hint(s) IVE ΑΣΦ Ecell: = Submit Part B 2+ What is the cell potential when the concentration of Cu Express your answer using two significant figures. ► View Available Hint(s) [5] ΑΣΦ Ecell = = Submit Part C ? V has fallen to 0.250 M? ? V What is the concentration of Pb²+ when the cell potential falls to 0.350 V ? Express your answers using three significant figures. ►View Available Hint(s)

A voltaic cell is composed of two half-cells shown below. Determine Q (at 298K) for the reaction when AG- -1,011.6 kJ/mol. Au (aq) + 3e Au(s) +1.50 V Ni2 (aq) + 2e Ni(s) -0.25 V Question 14