HCl ; hydrogen Chloride : Preparation; Properties (Part - 52) - P Block, Chemistry, Class 12 Video Lecture

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hydrogen chloride this is my hydrogen
chloride looks like it transparent
liquid and this was prepared in 1648
long time back ok by global and this was
prepared by clobber by heating NaCl and
my concentrated sulfuric acid so he used
this and he prepared hydrogen chloride
in 1648 but it was baby in 1810 this was
clobber but it was Davy
this guy Davy in 1810 he showed that it
is a compound of hydrogen and chlorine
so they knew there is a acid which has
different property but and prepared in
1648 but they didn't know what is the
chemical composition of this come from
right it had different properties so it
was classified as a chemical in 1648
itself but they didn't know that it has
hydrogen chlorine so it was Davy in 1810
which found that it has hydrogen and
chlorine so we talked about the
preparation in the lab we use NaCl and
sulfuric acid be in concentrated and we
heat this you get 1 NH so4 plus HCL in
this area so for what you get you again
hit this NHS a for which can you see a
moral SEL you get any tube a support and
it's use of my skin for this has at 420
Kelvin and this happened as a ok now
there's a seal gas we have gone it can
be dried up by passing it through h2so4
we have seen that sulfuric acid
drying agent it sucks up all the water
molecule so you can dry this
hydrochloric acid yes you talk about the
properties of this hydrochloric so it is
actually a a gas you can see but you can
not liquefy it also it is a colorless
pungent smelling gas see there is no
color so it's alright even if it is a
liquid it is a volatile you can actually
dick you fight this they told you can
easily liquify this colorless liquid the
boiling point is pretty less 189 Kelvin
it you can freeze this to form white
crystalline solid if you freeze this
please it will form white crystalline
solid this is extremely water soluble it
is extremely what you see here is HCL in
water this HCl is typically gas and you
react it water up it form this h3o plus
520 miles and chlorine ions very strong
acid the K is 10 to the power 7 is very
very strong acid it almost dissociate
completely okay in aqueous solution is
called hydro chloric acid again this is
a question is called hydrochloric acid
okay
HCL actually you call it hydrogen
chloride but this one in water it called
hydro chloric acid please note the
difference when you say hydrochloric
acid you have water molecule also hydro
is the water hydrochloric acid and SE
SEL is hydrogen chloride okay there's a
difference hydrogen chloride is the
color
spending spending gas okay well you mix
this with water you get this reaction
you get hydronium ions and cognized this
is called hydrochloric acid there is a
difference between hydrogen chloride and
hydrochloric acid hydrogen chloride
there is my gas at STP colorless pungent
smelling gas and hydrochloric acid is
nothing but my hydrogen chloride in
water and that is liquid and that was
wrong okay and this hydrogen chloride
the react with ammonia to give white
fumes ammonia it will react with HCl to
form white rooms nh4cl okay one good
property of hydrogen chloride h-cl is
you can form a quarry gia and aquilegia
is very strong it can actually dissolve
noble metals gold platinum equity here
is nothing but three part of hydrogen
chloride and one part of nitric acid so
you make this you get aqua regia and
this is very very strong it can dissolve
gold platinum for example you have gold
and you have this aqua regia this has h+
no.3 - + CL - right it dissolve this you
get a UCL 4 - and you know and what
similarly platinum also the aqua regia
can dissolve platinum - so you get P V
CL 6 2 - n o+ water this is the power of
atresia okay now my talk about the
hydrogen hydrochloric acid that is my
hydrogen chlorine water it actually
decompose sorts of weaker acids in the
carbonates hydrogen carbon and sulphur
example I can give you for example
for example I have any to co3
okay this is my salt carbonate salt in
you react with HCl it will form an ECL
water and carbonize or let's suppose you
take hydrogen carbonate so I can hco3
salt you again react with HCl it allows
of warm and you CL and water in the
carbon tax you talk about any sulfate
sulfides any to so3 sulfide it react
with HCL it will form NaCl water and so
that's all property of hydrogen right
please note hydrogen chloride and
hydrochloric acid it within three
hydrogen chloride is gas hydrochloric
acid is a question chloride it is a
liquid if we talk about the users this
hydrogen chloride is used to manufacture
chlorine and we have talked about the
application of chlorine it is also used
to extract blue from bones bones and
also it is used a lot in the medicine is
the medicines used hydrogen provide the
water take money vertical when HCl
hydrogen chloride react with finely
powdered iron it forms ferrous chloride
not very chloride why see even this I
told my just now I told you that the
chlorine Ashley can convert my ferrous
to ferric right but when you talk about
the HCL it reacts with the HCL the
ferrous chloride
I mean the I don't we
Idleman react with SCL it forms 82 plus
only why not a quickly plus she had the
device the non react with the CL it
forms every see and do and in get this
hydrogen you ask this hydrogen this is
plus 20 this hydrogen gas actually it
prevents further formation or fecl3
this hydrogen gas prevents the further
oxidation of fits okay thank you
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