Properties and Reactions of Ethanol (Alcohol) Video Lecture - Class 10

in this video you will learn some of the
chemical properties of alcohols how to
classify alcohols and some uses of the
alcohols alcohols are organic molecules
with the hydroxyl functional group which
is an oxygen bonded to a hydrogen
o H here is methane replace a hydrogen
with the alcohol functional group to
form methanol here is ething and here is
ethanol propane and propane all pause
the video and name this molecule this
was butanol did you get it right the
general formula of the alcohols is cnh2n
plus one Oh H the O hate group generally
makes alcohols pull the molecules the
hydroxyl group also gives rise to
hydrogen bonding in our video on
fractional distillation we discussed how
increasing chain lengths increase the
boiling point due to increased
intermolecular forces the alcohols
follow this same trend but their boiling
point is even higher than their
comparable outcomes and this is due to
the hydrogen bonding alcohols are placed
in one of three categories primary
secondary or tertiary based on the
position of the O H on the chain
alcohols will react differently
depending on the category they are in in
a primary alcohol the carbon atom on
which the o H group is bonded is itself
attached to only one carbon chain or one
alkyl group here is propane one o the o
H is attached to the end carbon and this
carbon is attached to just one single
chain of carbons in
can we alcohols the carbon atom on which
the O age group is bonded is attached to
two carbon chains or two alkyl groups
here is propane tool here is the carbon
atom on which the O H is attached and
here you can see the two alkyl groups or
two chains of carbons attached to this
carbon in tertiary alcohols there are
three carbon chains attached to the
carbon on which the O H group is
attached as you can see the carbon
attached to the O age group is attached
to three alkyl groups making it a
tertiary alcohol it is important to
categorize an alcohol as they have
slightly different chemical properties a
good example of this that you could look
into as further reading would be the
oxidation of alcohols with different
reactions occurring for primary
secondary and tertiary alcohols
different alcohols have different uses
at home and in industry ethanol is of
course a common alcohol used in
beverages but is also an important
antiseptic ethanol can be made by two
main methods by fermentation and by the
hydration of ithi we have made a video
on these molecules to learn about these
methods in more detail all the uses of
alcohols are as fuels preservatives and
solvents now at the end of this tutorial
you should be able to identify the
alcohol functional group named alcohols
understand their uses and be able to
categorize them as primary secondary or
tertiary