Consider these standard electrode potentials.
Fe2+ (aq) + 2e- format('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%3C%2Fstyle%3E%3C%2Fdefs%3E%3Ctext%20font-family%3D%22math1aa495e18c7e3a21a4e48923b92%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%2210.5%22%20y%3D%2216%22%3E%26%23x21CC%3B%3C%2Ftext%3E%3C%2Fsvg%3E)
Fe (s) EΘ = -0.45 V
Cu2+ (aq) + 2e- Cu (s) EΘ = +0.15 V
Which is the correct working to determine EΘcell?
EΘcell = 0.15 - (-0.45)
EΘcell = 0.15 + (-0.45)
EΘcell = (-0.45) - 0.15
EΘcell = 0.15 x (-0.45)
Which of the following is not a condition for the standard hydrogen electrode (SHE)?
1.00 mol dm-3 HCl
Hydrogen gas with a pressure of 100 Pa
Temperature of 298 K
Platinum electrodes
Which combination would electroplate an object with silver?
| X | Y | Z | |
| A. | Object to be plated | Silver | Silver chloride |
| B. | Silver | Object to be plated | Hydrochloric acid |
| C. | Object to be plated | Silver | Water |
| D. | Silver | Object to be plated | Silver nitrate |
What are the products for the electrolysis of concentrated sodium chloride solution using inert electrodes?
| Anode | Cathode | |
| A. | O2 (g) | H2 (g) |
| B. | H2 (g) | O2 (g) |
| C. | Cl2 (g) | H2 (g) |
| D. | H2 (g) | Cl2 (g) |
A voltaic cell is made by connecting two half-cells represented by the half-equations below.
Al3+ (aq) + 3e- Al (s) EΘ = -1.66 V
Sn2+ (aq) + 2e- Sn (s) EΘ = +0.14 V
Which statement is correct about this voltaic cell?
The cell representation is Al (s) l Al3+ (aq) II Sn2+ (aq) I Sn (s)
The Al3+ (aq) / Al (s) electrode is the cathode
The cell representation is Al3+ (aq) l Al (s) II Sn (s) I Sn2+ (s)
The Sn2+ (aq) / Sn (s) electrode is the anode
