In the periodic table: Elements in the
same group have the same valence
charges.
O False
O True
Consider the given half-reactions that occur at
the cathode and anode in an electrolysis
reaction at T=298 K.T=298 K.
cathode:Al3+(aq, 0.20 M)+3e---
-- Al(s)cathode:Al3+(aq, 0.20 M)+3e---
- - Al(s)
anode:Au(s)----
3+,
Au3+(aq, 0.17М)+Зе-
Al(s)
Al3*(aq) + 3e-
Au3*(aq)
-1.677
+ Зе
Au(s)
+1.498
Consider the given half-reactions that occur at the cathode and anode in an electrolysis reaction at T = 298 K.
cathode: Al3+(aq, 0.20 M) + 3e¯ Al(s)
anode: Au(s) Au³+(aq, 0.17 M) + 3 e-
Standard reduction potentials can be found in the table of standard reduction potentials.
What voltage must be applied to drive the net reaction if current is negligible?
Ecell =
V
Calculate the ohmic potential of the cell if the cell has a resistance of 3.5 N and a current of 270 mA.
Echmic =
V
Calculate the potential that needs to be applied to drive the reaction considering the calculated ohmic potential, an anodic
overpotential of 0.19 V, and a cathodic overpotential of 0.41 V.
Eapplied =
V
If concentration…
A 250 mL aqueous solution contains 2.37 g of copper(II) chloride. The dissolved copper(II) chloride is dissociated into copper(II) and chloride ions. Each copper(II) ion has two less electrons than protons. A scientist wishes to use an electroplating process to reduce the 1.12 g of copper ions to solid copper atoms. To be reduced from the ion form to the atom form, a copper(II) ion must gain two electrons. Each gram of copper(II) ions contains 9.48 x 1021 ions. Determine the total quantity of charge that must be supplied to turn the copper(II) ions into solid copper atpms
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The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY