Orthoboric Acid Video Lecture - Chemistry Class 11 - NEET

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it's going to the another compound of
boron that is odd for Budapest
the formula is B oh3 actually so this is
little white crystalline salt in soap
clean touch you can also write this as
s3 vividly what if you see both has
three hydrogen's oxygens in one wound so
you both of the formula is valid formula
and they are spraying I mean they're not
that much soluble in cold water but
soluble in hot water
similar to borax the structure if you
see this is the border and I have three
OS molecules here here also you see the
boron has six electrons here it is
deficient of electron right and this is
the shape structure of this and it
generally form this kind of cage-like
structure where you see it has formed
this torture there is a hydrogen bonding
between oxygen and hydrogen here similar
to water walls if you see whatever if
you see as to go right since what was
oxygen is like leading electronegative
and this is slightly electro positive
this is ten is slightly positive
negative charge here
in water and they form hydrogen one
similarly here also they form a hydrogen
bond actually if you say that's why this
little solid right where the hydrogen
bond it form this kind of structure
that's why I did solid so if you see any
solid or just keep in mind if you have
any solid elements it has to have some
cage-like structure without
cage rank structure it going to be sort
of example water is in liquid because it
has some structure but the bonding is
not that strong it is in the strong
bonding here so it has solid structure
if you see the diamond it is more solid
structures which is very hard so if it
is solid it has to have some structure
looking at this picture will you can see
that since it is solid it has to have
some structure the structure comes from
hydrogen bond the hydrogen bond helps
this boric acid to get this kind of
structure so normally I don't think of
acid you think of very strong as in the
liquid list shape for
liquid steak but in this case it is not
the case the boring case it is solid and
this as it is the latest as that they
talk about that let's discuss something
more on the boric acid it is a mono base
again is it actually even discuss more
on this now so the way to prepare this
boric acid there is nothing bad you SS
defy them borax solution so you have
this borax and it will be corrosive and
this is something you know right you
take this hydrochloric acid in water and
we get act worse and then you react you
get this very vessel very easy to
prepare so use from the borax you can
easily prepare boric acid by s defying
it in a quest function can also form
this by boron compound we have this
halides hydrides from that also you can
form the boric acid and as I told it is
a layer structure with the hydrogen bond
if you see this is my single BOS 3
molecule but it doesn't exist in this
fashion it is the cage-like structure
with the hydrogen bond between oxygen
and hydrogen right the next is I told
that the boric acid is V mono basic s in
it looks like it has three had hydrogen
molecule so it should give three
hydrogen but no it is a mono basic acid
because if you see because it doesn't
produce three hydrogen ions it is not a
photonic acid it is a Levis acid right
is all acid because the board is
electron hungry
correct correct it doesn't donate photon
it doesn't eat know what all you know it
does not happen enough the reason why it
is acid is because the bowler is hungry
of electrons it's a electron acceptor
actually it is normally acid see the way
you define an since at least the one
which can give extra science or is the
one which can take electrons so normally
which the acid with thought think of is
hydrochloric acid sulfuric acid a strong
acid and their proton donors because
they can donate H+ ions in the aqueous
solution this guy boring as it is not
capable
directing H+ ions in the aqueous
solution and this right is not a pond
photonic acid
most of the activity thing is protonic
acid because they have to the ability or
donating to h plus protons ions in the
aqueous solution but this guy is not a
protonic asset because it's a weak
levees s acid because it has the
electron hungry alright so and you see
the caning is also very less for this
it's variance is 10 to power minus 9 so
out of 10 to the power 9 molecules only
1 molecules accept electrons very very
modest gas correct so the moment it
reacts with water it water has an extra
electron pair it accepts that pair and
it becomes correct exotic put this in
the stands acid it's a very critical
concept here boric acid acid but it is
not a protonic acid is not having extra
protons to donate right so it is not
capable of giving protons it is just
that the boron there is electron hungry
it accepts the electron pair to this
acid and on heating this boric acid
above 370 kelvin reforms the metabolic
gas HB you'll do and when you heat it
further it gives boric oxide V 2 O 3 so
you have this boric acid heated get
metabolic acid you again further he did
you get boric oxide this is the property
of the boric acid you heat boric acid
you get metabolic acid and then boric
oxide boric oxide metabolic elses and
then boxin let's talk about the uses of
boric acid not the first uses the
enamels
they never fish you using a folk to
paint the windows that is used boric
acid use there it is also used to
prepare heat-resistant glass it is also
used to prepare antiseptics it is used
to prepare preservatives to preserve
food example as sauce the can which we
use right the juices the can use they
use body acid to preserve and is also
used as I draw
I drop the boric acid if you see the
word acid moment of thinking what you
might more do you think about acid you
must think about tribute II light
actually betrayed it should be very hard
harsh but boric acid if you see it's not
a proton with some other basic acid so
it is used in the eye and that's the
only acid dish you can use my any other
asset if you use a nice sulfuric acid
hydrochloric acid your eye will burn so
don't try to use this any a classic me
right the boiling as it we only ask to
use knife because it is not a proton or
in some harsh it is just the name acid
is given those levees acid and accepts
electron air thank you visit exam fair
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