MindMap Gallery Chemistry - redox reactions
This is a mind map about chemistry - redox reaction. Redox reaction is an important type of chemical reaction. Its essence is the transfer of electrons or the shift of shared electron pairs.
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Redox reactions
redox reaction judgment
Definition: A reaction in which the chemical valence increases or decreases before and after a chemical reaction
Essence: gain and loss of electrons or shift of shared electron pairs
Oxidizing agent (oxidizing) - gaining electrons - being reduced - reduction reaction - reduction product (reducing) Reducing agent (reducing property) - loses electrons - is oxidized - oxidation reaction - oxidation product (oxidizing property)
Compare: Reducibility: Agent > Product Oxidizing property: agent>product
law
loss of redox agent
reducing oxidizing agent
electron transfer
single line bridge method
①Marked price change
② Connect a single line (together with various elements)
③ Note gains and losses (the number of electrons gained is equal to the number of electrons lost)
Four major reaction types and Redox reaction relationship
Displacement reactions are not necessarily all redox reactions
Metathesis reaction must not be oxidation reaction
image
Valence
Valence
Highest valence state: any state that has lost its outermost electron shell There are electrons that bring themselves to a relatively stable state
The lowest valence state: a certain number of electrons are obtained, The number of electrons in the outermost electron shell reaches saturation, bring oneself to a relatively stable state
Metal prices basically unchanged
redox balance
Three major conservations
electronic
charge
atom
Steps: variable price element → non-variable price → check
①Marked price change
②Ming lifting
③Common multiple
④Check conservation
four types
①All price changes
②Partial price change type
③Centralization reaction
Refers to different valence states of the same element rising or falling to adjacent valence states
④Disproportionation reaction
Refers to the conversion of the same element from one valence state to two valence states