Equilibrium - Dynamic nature of chemical equilibrium Video Lecture - Class 11

hello friends this video on equilibrium
part 5 is brought to you by exam fear
calm no more fear from exam before
watching the video please make sure that
you have watched part 1 - part 4 as I
told that that chemical equilibrium is
dynamic what is the proof of this it has
to be afraid I'm just telling with anime
but if you look at the that suppose my
class if I put some salt in this mix
there it goes off you keep adding more
it does it is on maybe that the extra
salt which I'm adding is not absorbing
really I don't that the crystals sugar
salt crystals the new ones good in
solution and the some fishes comes from
solution and becomes crystals and it
happens as I told there is no proof I
didn't give you proof of that here's a
proof of this so what we have done is so
let's let's take two two reactions here
so I am into class 3a she gives to
ministry this is also a comedian
reaction or reversible reaction and n2
plus DT I think and here I'll get 2 n DG
d2 is deuterium so these in this case
this is my case 1 this bike is T so my
case what is this beaker case T is B so
here I have an s3 in equilibrium here I
have n b3 and both are equally along
both a bridge I have kept this the n2
and s2 in a beaker it reached
equilibrium it has now n 2 h2 n this guy
beaker one will have n 2 h2 n NS to see
things beaker 2 will have n d2 N and D 3
three things now what I do is I join
this I joined this so what happens is
gas comes on this mix of this the gas
makes this right and then again equal
administration now since they are all in
equilibrium even if I make said what
will happen it will have n 2 h2
ns3 from first and n2 h 2n v3 from
second right
so already you have four different it
should have four different than the
bigots of moving it for different
chemical compound right because it had
interesting and a street had entered
eagle nesting some do-254 different end
to h2 and h3 and d3 and d2 right so
we'll have five we should have five
different chemical compounds in this
because they were already equilibrium
and now they are a condition or threa if
assuming that is not balanced but using
spectrometer scientists have seen that
after some time these the Cape this
chemical compounds which needs to become
the mixed liquor had was and esteem
expected and h2d was their NSD to was
there anything was there h2 was there
and who was there
so h2 n2 these things will be expected
at right these things be expected this
was expect these to be expect how it
came our arrest to dig in awe NHD to
King why because this is Daniel's even
if it reached aquarium he was turning it
keep reacting right because see even if
this you guys explain to NSC they acted
with d2 and our nd to react with nest h2
all these reaction keep happening and
that's why we got these two also so
visiting mass spectrometer or chemistry
founders and that they proved that the
equivalents on even a big remains
reached the reaction happens forward
reaction both ah
so in this case you can technically SH
all these reaction happening now since
they are real mixture this reaction also
happen nh3 mix with or redo nd three
weeks with h2 almost reaction of swamp
so powerlessness uncharacteristic
chemical equilibrium we have done from
physical illness before the chemical
idiom it's observable proper observable
property the system pressure color
concentration they become constant and
equilibrium and they don't China these
are the observable properties property
which we observe those properties
becomes constant right it has dynamic in
nature
third properties equilibrium can be
imposed on either side example you have
n2 and h2 gives n s3 as I told that and
you have suppose you start with 10 moles
of this 10 months of this and zero all
of this you will reach it again or you
start with 20 poles of this let suppose
and 0 both of this then also you reach
equal so it can be approached from
inside edge from this side options
please notice a critical thing
equilibrium can be approached from
either of the side it happens only the
closed system so as I click you let me
also happens a closed system this also
offers in the closed system and catalyst
they don't alter the equilibrium we will
discuss more about this it increases the
rate of reaction but it won't alter the
equation because it will increase the
rate of reaction both forward and
reverse it is like this yeah I mean if
the rate of formation of this guy is
let's suppose 10 moles per minute
without catalyst right n moles per
minute and this is also it supposes 10
moles per minute so moment you add
catalyst both they become 50 moles per
hour
so both the reaction will be fast right
both the reaction will be fast but it
won't be altering the equilibrium so
going to discuss this when we discuss
the he will process here we actually use
catalyst to make it fast but the
aquarium as such is not impact
see we discuss a lot about equilibrium
and we have something doubts she once
doubt is what is the relationship
between the concentration of reactant
product in the equilibrium for example I
have a plus B to C and E if I start with
10 10 so uniquely around will it be 2 2
8 8 or it will be 3 3 7 7 I don't know
what is the relationship what it reminds
me there will be 3 7 2 way or 2.5 and
7.5 you don't know what are the factors
which determine this also can we
determine the equilibrium relation
concentration I am told that if I was
really get C plus D is my mixture if I
start with 5 5 moles of this and 2 2
moles of this or if I start with 10 10
of this 0 0 of this or I start with a
date of the syllabus so in all these
case the initial concentration can be
determine what will be the occluding
concentration and how can we alter this
how can we please the tool drive reason
why we're studying include image you
want to understand the property of
equilibrium and then tame it to make
sure if you want C plus the output you
can get the maximum you can maximize
this right that's what the whole purpose
of understanding the human capital so
the question is how can retain it
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