Electrochemistry Flashcards
1
Q
- deals with the relationship between electricity and chemical reaction.
- energy transferred between electricity and chemical reaction.
- chemical reaction are electrically charge due to transfer of electrons
of the substances. - its basic principle in transfer of electrons is the oxidation and
reduction reaction; redox reactions
A
electrochemistry
2
Q
a reaction/process in which an atom loses an electron/s in a given chemical equation.
* increases its oxidation number
A
Oxidation reaction
3
Q
= is the[alternative word] charge that atom would
have if the compound was composed of ions
A
(oxidation number
4
Q
- a reaction/process in which an atom gains an electron/s in a given chemical
equation.
decreases its oxidation number
A
Reduction reaction
5
Q
- is a simultaneous chemical reaction in which electron/s are transferred from one substance to another substance in a given chemical equation.
- one substance increases its oxidation number (loss of electron/s) – an
oxidation reaction - the other substance decreases its oxidation number (gains in
electron/s) – a reduction reaction
A
Redox reaction (combination of oxidation and
reduction reaction)
6
Q
- Oxidation number increase
- Lose of electron/s
- Oxidized substance
- Reducing agent/reducer
- (oxidized) (reactants)
- Metals are generally reducing agents
- O, Increase oxidation no., Loss of electrons
A
OXIDATION
7
Q
- Oxidation number decrease
- Gain of electron/s
- Reduced substance
- Oxidizing agent/oxidizer
- (reduced) (reactants)
- Many nonmetals are good oxidizing agents
- R, Decrease oxidation no., Gain of electrons
A
REDUCTION
8
Q
A + B -> AB
A
Direct combination or synthesis :
9
Q
AB + Δ -> A + B
A
Decomposition or analysis:
10
Q
A + CB -> AB + C
A
Single displacement or replacement or substitution :
11
Q
A + O 2 -> CO 2 + H2O
A
- Combustion:
12
Q
A
