CBSE Class 11 > Class 11 Videos > Equilibrium - Le Chateliers principle
Equilibrium - Le Chateliers principle Video Lecture - Class 11
FAQs on Equilibrium - Le Chateliers principle
| 1. What is equilibrium according to Le Chatelier's principle? |  |
Ans. Equilibrium, according to Le Chatelier's principle, is the state of a chemical reaction where the forward and reverse reactions occur at the same rate, resulting in no net change in the concentrations of reactants and products. Le Chatelier's principle states that when a system at equilibrium is subjected to a change in conditions, it will respond in a way to minimize the effect of that change and restore equilibrium.
| 2. How does Le Chatelier's principle explain the response of a system to changes in conditions? | |
Ans. Le Chatelier's principle explains that when a system at equilibrium is subjected to changes in conditions such as temperature, pressure, or concentration, the system will shift in a direction that minimizes the effect of the change. For example, if the concentration of a reactant is increased, the system will shift in the direction that consumes that reactant to restore equilibrium.
| 3. How does temperature affect the equilibrium according to Le Chatelier's principle? | |
Ans. According to Le Chatelier's principle, an increase in temperature favors the endothermic reaction (reaction that absorbs heat) while a decrease in temperature favors the exothermic reaction (reaction that releases heat). When the temperature is increased, the system will shift in the direction that consumes heat to counteract the increase in temperature, and vice versa.
| 4. Can Le Chatelier's principle be applied to changes in pressure or volume? | |
Ans. Yes, Le Chatelier's principle can be applied to changes in pressure or volume. An increase in pressure or decrease in volume will cause the system to shift in the direction that reduces the number of moles of gas to counteract the change, while a decrease in pressure or increase in volume will cause the system to shift in the direction that increases the number of moles of gas.
| 5. How does Le Chatelier's principle explain the effect of a catalyst on equilibrium? | |
Ans. Le Chatelier's principle states that a catalyst does not affect the position of equilibrium but speeds up the rate at which equilibrium is achieved. A catalyst provides an alternative pathway with lower activation energy, allowing the reaction to proceed faster in both the forward and reverse directions. However, the concentrations of reactants and products at equilibrium remain unaffected by the presence of a catalyst.
Text Transcript from Video
hello friends this video an equilibrium
part is brought to you by example a calm
no more PA from exam before watching the
video please make sure that you have
watched all the previous parts as I have
told the whole point of understanding
the equilibrium was to obtain the
equivalent right you don't obtain the
equilibrium so that we can use the
concepts to get the maximum result
so you see main goal for all the
chemical synthesis that happens in most
Factory is to maximize the conversion of
reactant you must have use the heart of
top efficiency she's always late
hardly 100% right so when you do some
chemical reaction you find that the
reactants reach equilibrium and you
don't get much product one of the good
examples here approximately what does
process later you'll see that all the
principle of equivalence you to share so
they'll first try to understand all the
factors that impact it billing and then
we'll take one or two examples where we
will see that in next week how this
knowledge of equilibrium all the factors
of that effect is used to produce
maximum result to produce maximum
products each that also know that if my
system is in equilibrium and if I change
something example if I change the
concentration of reactant to product the
system will no longer be and again the
reaction will take place in some
direction we don't know so we don't know
is the rationale we'll talk about the
principles or the laws which talk about
directional flow the reaction will
happen in some direction we can find
with the QC and KC you can find
direction at least it'll happen in some
direction listen to me no no that also
it will happen in some direction until a
fluid is to eat right that's how the
process so a system in equilibrium you
disturb it not for some time again
system you go to Italy so in order to
decide what course of reaction is taking
not the system the NIC Librium you
disturb it what will happen
which direction you to blow however to
globe those kind of stuffs there is a
principle given valley Chatelier chant
leach idolater give your principal
connelly Chatelier principle and this
principle is helpful in understanding
how the system will behave if one of the
parameter is chained with pressure
volume temperature concentration so
we'll discuss about lis Chatelier
principle so what is leach either
principle it's a very small a very
simple reservoir and bourbon tap it has
a lot of impact it sees that if a system
is in equilibrium example I have the
system and it's an equilibrium where a
plus B is the reactant C and easy
product if I change any of the factors
that determine equilibrium I'll talked
about the factors which determine of
example pressure or temperature of
volume they are the factors which
determine D quickly but something like
catalyst it doesn't matter my in the
equilibrium doesn't matter which shuttle
chatting regularly moving back so there
some factors which determine the
equilibrium if you seen in unis factors
the system will react in such a way so
that it will counter act the effect the
change it will me my is the effect will
change it will revert by the chain you
say by this guy and it took some 10
rupees from him the guy will do
something to get the tell me is back
well so everything is not a equilibrium
right so example someone gets most
trusts by the exam but I will do
something with some yoga or some lands
too distressing because the student
always want to be stress-free similarly
the system wants to be in equilibrium
and if there are some factors which
determine the colibri magically in the
system that is change the system will
behave in such a way that any contract
the change and this is applicable only
in the case of equilibrium it is
applicable to physical and chemical in
both but only in the case of equilibrium
for example you can see this weight
balance right if you it says like this
so if you example this is if we add more
products for a balance the product
concentration is more so what we'll do
is
will happen now and more of C&D uniform
and this a will be reduced in that case
if you see so similar some homie
balanced again so or if you example pump
in more and more and more DS for novels
the system will move in this direction
and the reaction will happen in this
direction and more and more a and B will
come up you counter and tie the chain
because it says that there has to be a
balanced number of moles of a B and C
and D so if somebody is disturbing that
the Li Charlotte principle talks about
how this system behaves such that it
will counteract effect of the change
right example if you add more reactant
here more reactant what will happen is
according to each other principle each
reactant will react some of this
reactant will react and form product
some not so now if you see if you added
it suppose five reactive six reactant
out of that three reactant will go and
form collapse and three will remain like
that so you see they are three more
reactant three more product so kind of
system is balanced right now if you add
more it suppose the products what labin
is it supplier to the a products it
works it moves so now this product will
react in this direction and create some
reactants not all but some of them this
with that but libelous these products
which part reacted will be exhausted
from here and lab for products heroes of
aquatics reacted in faster so somehow it
will try to maintain the equilibrium
right you got the logic so you add
something more here it will react so
that things are balanced you get more
product here if you add something here
to react and it will form something here
thank you
visit exam Viacom to watch free
education videos try free online tests
get the best quality study materials
study from the best tutors and mentors
and mass flow Thanks
part is brought to you by example a calm
no more PA from exam before watching the
video please make sure that you have
watched all the previous parts as I have
told the whole point of understanding
the equilibrium was to obtain the
equivalent right you don't obtain the
equilibrium so that we can use the
concepts to get the maximum result
so you see main goal for all the
chemical synthesis that happens in most
Factory is to maximize the conversion of
reactant you must have use the heart of
top efficiency she's always late
hardly 100% right so when you do some
chemical reaction you find that the
reactants reach equilibrium and you
don't get much product one of the good
examples here approximately what does
process later you'll see that all the
principle of equivalence you to share so
they'll first try to understand all the
factors that impact it billing and then
we'll take one or two examples where we
will see that in next week how this
knowledge of equilibrium all the factors
of that effect is used to produce
maximum result to produce maximum
products each that also know that if my
system is in equilibrium and if I change
something example if I change the
concentration of reactant to product the
system will no longer be and again the
reaction will take place in some
direction we don't know so we don't know
is the rationale we'll talk about the
principles or the laws which talk about
directional flow the reaction will
happen in some direction we can find
with the QC and KC you can find
direction at least it'll happen in some
direction listen to me no no that also
it will happen in some direction until a
fluid is to eat right that's how the
process so a system in equilibrium you
disturb it not for some time again
system you go to Italy so in order to
decide what course of reaction is taking
not the system the NIC Librium you
disturb it what will happen
which direction you to blow however to
globe those kind of stuffs there is a
principle given valley Chatelier chant
leach idolater give your principal
connelly Chatelier principle and this
principle is helpful in understanding
how the system will behave if one of the
parameter is chained with pressure
volume temperature concentration so
we'll discuss about lis Chatelier
principle so what is leach either
principle it's a very small a very
simple reservoir and bourbon tap it has
a lot of impact it sees that if a system
is in equilibrium example I have the
system and it's an equilibrium where a
plus B is the reactant C and easy
product if I change any of the factors
that determine equilibrium I'll talked
about the factors which determine of
example pressure or temperature of
volume they are the factors which
determine D quickly but something like
catalyst it doesn't matter my in the
equilibrium doesn't matter which shuttle
chatting regularly moving back so there
some factors which determine the
equilibrium if you seen in unis factors
the system will react in such a way so
that it will counter act the effect the
change it will me my is the effect will
change it will revert by the chain you
say by this guy and it took some 10
rupees from him the guy will do
something to get the tell me is back
well so everything is not a equilibrium
right so example someone gets most
trusts by the exam but I will do
something with some yoga or some lands
too distressing because the student
always want to be stress-free similarly
the system wants to be in equilibrium
and if there are some factors which
determine the colibri magically in the
system that is change the system will
behave in such a way that any contract
the change and this is applicable only
in the case of equilibrium it is
applicable to physical and chemical in
both but only in the case of equilibrium
for example you can see this weight
balance right if you it says like this
so if you example this is if we add more
products for a balance the product
concentration is more so what we'll do
is
will happen now and more of C&D uniform
and this a will be reduced in that case
if you see so similar some homie
balanced again so or if you example pump
in more and more and more DS for novels
the system will move in this direction
and the reaction will happen in this
direction and more and more a and B will
come up you counter and tie the chain
because it says that there has to be a
balanced number of moles of a B and C
and D so if somebody is disturbing that
the Li Charlotte principle talks about
how this system behaves such that it
will counteract effect of the change
right example if you add more reactant
here more reactant what will happen is
according to each other principle each
reactant will react some of this
reactant will react and form product
some not so now if you see if you added
it suppose five reactive six reactant
out of that three reactant will go and
form collapse and three will remain like
that so you see they are three more
reactant three more product so kind of
system is balanced right now if you add
more it suppose the products what labin
is it supplier to the a products it
works it moves so now this product will
react in this direction and create some
reactants not all but some of them this
with that but libelous these products
which part reacted will be exhausted
from here and lab for products heroes of
aquatics reacted in faster so somehow it
will try to maintain the equilibrium
right you got the logic so you add
something more here it will react so
that things are balanced you get more
product here if you add something here
to react and it will form something here
thank you
visit exam Viacom to watch free
education videos try free online tests
get the best quality study materials
study from the best tutors and mentors
and mass flow Thanks
About this Video
Apr 20, 2026 Last updated
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