Equilibrium Involving Dissolution of Solids or Gases in Liquid Video Lecture | Chemistry Class 11 - NEET

hello friends this video on equilibrium
part 3 is not Cuba exam Viacom no more
fear from exam before watching the video
please make sure that you have watched
part 1 and part 2 so let us take one
example a liquid is in equilibrium with
its vapor in a sealed container in fixed
temperature the volume is increased what
is the initial effect on the change of
vapor pressure well how does the rate of
evaporation and condensation change
initially and what will happen they keep
the mist or file so let us take the same
container we have this dish of water
here and it is an equilibrium now the
volume is increased this is increasing
little business has become this big
sense the wall is increased so obviously
the first question says effect of change
in blood pressure so pressure will
decrease right why because we have told
that volume and pressure university
condition so increasing the volume of
this pressure will definitely decrease
but smell first
yes take second how does the rate of
evaporation and condensation change
initially see the rate of evaporation
the rate of evaporation is depended of
water so rate of evaporation is depend
on temperature only and the chemical and
temperature Ender we can confirm so if
my temperature is not changed chemical
compound does not change the rate of
evaporation will not change will not
change let's talk about the rate of
condensation if you talk about the rate
of condensation it is dependent on what
the vapor pressure on a compression so a
vapor pressure is decreased the rate of
condensation also
degrees Larssen min descends Syrian of
you operation whatever it will evaporate
here that depends on the temperature and
the chemical compound of the material we
talk about for example water here so
water is not change here now the
temperature is changed is the room
temperature the fix temperature actually
it stays here so rate of evaporation
launching but condensation if you see
you must have seen it depend on the way
the pressure right so initially there is
no condensation now it will evaporate
more more more more the pressure will go
up and then condensation this time and
then condensation this time since the
vapor pressure has decreased the rate of
pedestrian also use then sorry what
happens when the equilibrium is finally
restored and what will be the final
revolution see when the equilibrium is
finally the store the vapor pressure
will be same because I told vapour
pressure at the equilibrium is not
independent is independent of a polymer
if you make big volume small doesn't
matter it's depend on the volume or the
amount of our thing the property of
subset so vapor pressure will be stone
and if you talk about the vapor pressure
the rate of your operation and rate of
condensation at that time so that time
you will see the rate of evaporation
will be equal to rate of condensation so
what will happen here the would increase
the volume the vapor pressure will
decrease so the condensation rate loss
of degrees so more and more vapor will
be buffered once more and more vapors
are there in the system the vapor
pressure builds up right and then in the
vapor rate of evaporation in there when
the vapor pressure becomes low vapor
pressure that time you see the rate of
evaporation of the condensation that
time you see the vapor pressure will
stay C if you take some water
and some sugar here try to resolve you
see that you are able to resolve but if
you add more and more sugar you get this
kind of solution but you will see that
after some time you see that some sugar
glitches are still they are known to
dissolve it all right why because it has
at least agree but now if you heat this
if you increase the temperature you will
see that the sugar crystal which was not
dissolved and you get dissolved that
means this Guy'd dissolution of solids
and liquid is dependent on temperature
or so if you see if you watch super set
up and if you cool down goo this what
you will see this you cool it you will
see that the liquid your crystals comes
out and that's what we're doing
crystallization right we cool things and
we see that we cool solution we see the
crystals comes out so that's what we see
that the men in talked about the
relation of solids and liquid that is
temperature dependent so let's not all
dissolution of gases only see the
solution of gas and liquid is not
temperature dependent then you first
only it is not temperature dependent it
is governed by Henry's law which says
that the mass of gas dissolved in a
given Maha solvent at any temperature is
proportional to pressure the gas above
the salt and that is how you see when
you this cupola bottle is filled this
pended very high pressure and that's why
all this gas is bubbles get this all the
more when you open it the high pressure
is gone
what you have is atmospheric pressure
which is much less than the high
pressure which at which this what you
are see the bubbles comes out bubbles
comes off hope you are getting a fine
so that is why even if you heat these
cool this the the bubbles four-count
right in your dick a googol of
let me pull it or heated the UNC Baba
the mud you open it when a the moment
you are put a change in pressure you see
the numbers coming up that mean
dissolution of the gas in liquid this
pressure dependent behind this it is
pressure because in general it is not
temperature so let's do a recap of what
we have Langella so for a solid liquid
equilibrium it exists only at one
temperature that is momentum one for a
liquid vapor equilibrium it also exists
the constant temperature for a solid
liquid equilibrium we have like screwed
in pure in water it also is a comment
impression but for the gas liquid
equilibrium it is depend on pressure I
it is a little pressure the other three
things are these three things are
temperature different hope you will keep
this in mind what you think that what
everything is temperature only we talk
about coca-cola it is pressure then when
you open the bottle and the open it be
the bubbles so that is nothing but the
gas liquid equilibrium and that is
pressure data
so having studied the various kind of
physical equilibrium lengths understand
the general characteristics of
physically if you will miss you overload
the first and the most critical thing is
it is possible only closed system at a
given temperature when my system is
closed you know my chemicals can't go
out heat kind of that time only you have
this physical
looking in open system I can't get
physical
it has to be closed system at a given
location the second characteristic is in
the physical equilibrium with the
forward reaction in the backward
reaction both take place I mean to see
is dynamic it is dynamic put forward a
reaction backward reaction and take
place simultaneously and they are equal
I definitely think both the opposite
process okay the same right same rate
you see so it is dynamic also and when
you have equilibrium reach all the
measurable properties are constant you
see also in the cases pressure is
constant the volumes bounce and
temperatures cause all the measurable
properties we have this constantly
so the equilibrant obtained by physical
process it is Chi 12 a constant value of
one of its parameters
they give it that's why it's say that
all the miserable properties are
constant the magnitude of such
quantities at any stage indicates the
extent to which your reaction has
proceeded before listening so for
example I have the lock eyes lot of eyes
and it was at temperature now let's
suppose shine businesses you see out of
five eyes a very few of them let suppose
10 percent of them vented but again I
haven't some eyes and this time I have a
tripling businesses you see you're just
90 percent event right because seeing in
both case agreement will be reached left
on take 50 it's too high at 6:20
Defence's literally ET person's menu so
you both is equilibrium is reached but
in one case ten person of the eyes part
meant and another was AG person dies so
good into my the extent to which the
reaction has taken place and I'm talking
about crashing I'm not involve the
conversion of water from solid stage in
the liquid state correct so we will talk
more about this when we talk about how
to find the extent to which the reaction
has taken place right but the magnitude
of such point is is that I told right if
you have for some value so
have constant value over the water or
cosmetic guys all these things will
determine the magnitude or the extent to
which the reaction has taken place the
first and the foremost requirement is it
has to be the closed system extend
Richard it is dynamic all the visible
property is constant and you want to
find how much reaction has proceeded
before reaching equilibrium you have to
if I understand the point it is a verb
systematically and then it will
calculate and find which how much
reaction or whole system has posted
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