Reactivity 3.2 - Electron Transfer Reactions Flashcards
(15 cards)
Summarize oxygen in terms of electron oxygen and hydrogen
List the 5 steps of redox balancing
1) Balance for atoms other than O or H
2) Balance for O by adding H2O
3) Balance for H by adding H+
4) Balance for charge by adding e-
5) Balance for e- and add two half equations
5 differences between voltaic and electrolytic
Current is conducted by wires + salt bridge | Current is conducted by wires + electrolytes
Anode is negative and cathode is positive | Cathode is negative and anode is positive
Similarity between voltaic and electrolytic
Anode is Oxidation and Cathode is Reduction
Which metal will be the anode in a voltaic cell
The metal higher up the reactivity series
What does the salt bridge do
Allows for the movement of ions between half cells to balance charge and complete the circuit.
What are electrolytic cells used for
To split ionic compounds into their constituent ions
How are the ions in electrolytic cells split up?
They are heated until molten and and electric current supplied from the battery and the ions are attracted to the anode or the cathode.
Summarize the oxidation of alcohols
Summarize the reduction of carbonyl compounds
What is the standard electrode potential
The electrode potential of a half cell emasured under standard conditions relative to SHE (standard hydrogen electrode)
Formula for electrode potential of a cell
What does it mean if the standard electrode potential is greater than 0?
Sponteneous
Formula linking gibbs free energy and electrode potential
What is electroplating
The electrolyte coating of an object with a thin layer of metal, rediction of the metal ion at the cathode leads to the deposition on the surface of the object
