Redox Reaction Flashcards
What is Oxidation and Reduction in terms of oxygen?
Oxidation is the gain of Oxygen
Reduction is the loss of Oxygen
What are the oxidising and reducing agent in terms of Oxygen?
Oxidising agent= Oxygen donor
Reducing agent= Oxygen acceptor
What is oxidation and reduction in terms of Hydrogen?
Oxidation is the loss of Hydrogen
Reduction is the gain of Hydrogen
What are oxidising and reducing agents in terms of Hydrogen?
Oxidising agent is Hydrogen acceptor
Reducing agent is the Hydrogen donor
What is oxidation and reduction in terms of electrons?
Oxidation is the loss of electrons
Reduction is the gain of electrons
What are oxidising and reducing agents in terms of electrons?
Oxidising agent = electron acceptor
Reducing agent = electron donor
What is the Oxidation State of any element in a compound?
The oxidation state of any element in a compound shows the number if electrons that it has lost or gained in boding
What do a positive and negative oxidation state show?
Positive number shows loss of electrons (oxidation)
Negative number shows gain of electrons (reduction)
What is the oxidation number of elements?
0
What is the oxidation number of oxygen (and the exceptions)?
Always -2 (except peroxides, -1 & Oxygen difluoride, -2)
What is the oxidation number of Chlorine (and exceptions)?
Always -1 (except in compounds with F&O where its positive)
What is the oxidation number of Hydrogen and exceptions?
Always +1 (except metal hydrides, -1)
What is the oxidation state of fluorine?
-1
What are the oxidation states of group one and group two elements?
Group 1 (+1)
Group 2 (+2)
What is the oxidation state of aluminium?
Always +3
What are the rules for writing half equations?
- One half equation must show oxidation and the other reduction
- The no. of electrons must be the same
- The overall equation must balance for atoms and charge
- Add state symbols is needed.
