Core
Reactions: Redox
Slide 7 of 42
6. Redox reactions
Next
we will go on to look at Redox reactions.
Redox
reactions are an important type of reaction.
Photography,
respiration, reactions in batteries, wine going off, bleaching, rusting
photosynthesis etc. are all examples of what in chemistry we call redox
reactions.
Photography
involves conversion of silver bromide to silver metal.
Respiration
involves the breakdown of glucose in the presence of oxygen to get energy.
Reactions
in batteries involves using the different reactivity of metals to make electrons
flow through a circuit which again provides energy.
Wine
going off, bleaching, rusting also involve reaction with oxygen which are classified
as redox reaction.
But before we can begin looking at this
type of reaction, first a description of concecpt essential to the
study of redox reactions: oxidation state.