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advanced videos Hello Friends in the last
lecture we have seen that how we have
estimated the electrolytic cell of
molten NACL  and we have did the
diagram and yes we have calculated and
we have draw the net cl reaction also so
now what we are going to do is now we
are with the help of that principle we
are talking about
defend this law and what is that let us
see
there are basically two Faraday's law
that is fair this first law and the Fed
is second also let us talk about
fairness first law and let us see what
does it states that is first off states
that the amount of substance that
undergoes oxidation or reduction at each
electrode during electrolysis is daily
proportional to the amount of
electricity passed through the cell it
means in the previous lecture only we
have studied the electrolytic cell of
molten emission in this case we have
studied that at anode the chlorine
molecules I've been getting inhibited
and at cathode these sodium atoms or
these sodium atoms have been getting
deposited so this is proportional to the
current went past through the solution
or when the current is passed
listen if more amount of thread is will
pass through the cell for more time then
the electrolysis will happen much more
effectively so this is what the federal
first law says that that if you pass
more current through a solution then the
electrolytic cell will occur more and
that is for more time also so therefore
for what I could say is that if you
increase the current then the
electrolytic process of a particular
electronic will always increase and it
depends that how much amount of weight
that has been deposited on the anode as
less on the cathode is also dependent on
the current so now let us talk about the
second law the second law states that
when same quantity of electricity is
passed through different electrolytes
arrange mean series then the masses of
the substance that will liberate or we
get deposited and in the respective
electrode is deily proportional to the
chemical equivalence so let me give an
example to make you understand that how
is the second law stated by the faraday
suppose if i consider two solutions one
is an acidic solution and one is the
seventh simple solution
both have been connected in series the
same example as we have did for the
electrolytes Excel of modern Ellison
but in case of modern unison there was
only one cell of motivation but now we
are taking the initial solution as
earnest Zients into solution so in this
case suppose if I pass electricity
through the external circuit that is
truly battery then at a respective anode
a particular molecule will get liberated
or deposited at a respective cathode the
particular chemical in the form of atom
or in the form of gaseous state we get
deposited or liberated but there are two
cells what is one cell is of addition
while the other side is of Jenin sealed
so in this thing the one which has
higher equivalent weight will have the
more amount of the solution or the more
amount of the atom will get deposited on
that particular cell on the particular
half cell suppose in this case suppose
if I talk about if ZN that is if zinc
has more equivalent weight than that of
sodium then we could observe that at
particular cathode of the zinc in which
it is a big dip the electrons the
electrode will have a deposition of more
zinc then that of the deposition of
sodium on its cell that is on the
initiation so this depends on the
equivalent weight even though the same
amount of current is passed through both
the solution when this both solution
when this two cells are being connected
in series so because of help of this we
could estimate that as we can see that
is the reappearance of the metal or the
reappearance of a particular chemical
that are appearing on the cathode and
anode by arranging too much of and so
many of half cells and by observing we
could estimate that which chemical would
have the higher electrochemical weight
so this is the theory that has been
shown by
and was been elaborated by a Faraday and
because of help of which the ferry first
law which states about the weight of the
substance that will get deposited on the
basis of the electricity the higher the
electricity the more will be the weight
of the sodium or the main cation or Aran
that will deposit on the respective
electro well the second law that is the
second fret no it's tales about the
equivalence with the more the equivalent
weight the more will be the weight of
the particular substance will get
deposited if multiple tough cells are
connected in scenes so based on this two
law they have formulated an equation
which states that W is equals to Z I T
divided by 96500 Coulomb so in this
formula the W means the weight or the
mass of the substance that has deposited
on the respective two while I is known
as the current t is known as the time
and Z is known as the equivalent weight
and why this that is this indigo that is
nine six five zero zero it is nothing
but the faraday constant and how does it
have King since you know for one mole of
electron it consists of six point zero 2
3 into 10 raised to 23 number of
electrons one mole of electron will
contain six point zero 2 3 into 10 days
23 mole of electron and one electron has
a charge of 1 point 6 into 10 raise to
minus 19 coulomb so this number of
electrons well multiplied by 1 point 6
into 10 raise to minus 19 coulomb will
give you an overall charge of 9 6 5
zero-zero of kunam so that is that is
this states that one mole of electron
will consist of 96500 Coulomb that is
known as a Faraday constant and with the
help of this this formula has been
evaluated and this would be very much
helpful to estimate what would be the
weight or what will be the mass of a
particular substance that has been
deposited when this much amount of
current is passed in the time interval
of this much and which has an equivalent
rate of Z so this was a much easy so
based on these two things we have
equated and the formulated in a formula
so thank you friends for watching this
video I hope you have liked this video
and you have to get much more
information what is electrolytic cell
and what is electro chemical cell so
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