The Reactivity Series Video Lecture - Class 10

this video on metal and nonmetal part
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more fear from exam before watching this
video please make sure that you have
watched part 1 - Part A so till now we
have reacted metals with oxygen with
water and the hazards but still we are
not able to find the exact way activity
see example we had doubt within
potassium sodium in doubt between gold
and silver they doubt Britain copper and
net so what should we do now let's have
is 1 2 1 fight
1 2 1 fight and the winner is the one
which is more reactive right so let's
react with metallic metal salts for
example in this case the fact is the
more reactive metal will displace the
less reactive metal more reactive metal
will display the stronger metal in this
place the less reactive minutes from
their component in solution or go to the
state example will take this but this
this if you see that our total earlier
we have used this hydrogen oxygen acid
but be not able to determine the
reactivity series so we are using this
statement reaction that will give you
better evidence of the reactivity that
is the rule is very simple the middle a
displays the metal B from it solution
that means it is more reactive as a is
more reactive early correct pretty
simple so if I have metal a plus
solution of metal B so if this will give
solution of metal in middle B is out
right in this guy kicks metal out from
the solution it metal aches so metal B
from its solution that means a is more
reactive than P but this rule will find
so scientist has done on experiments on
this and they have found that this is
the reactivity series example in till
now we were able to find that this we
were having confusion in this this was
clear to us on this was a confusion this
for the country right so with ample lead
in copper so we had to find bhishen is a
more stronger so you take this lead and
you take copper solution that you react
you will find the
dat bcl-2 plus coffee that means if you
see that lead has displaced copper out
you see that copper has came out then I
can see that lead is more stronger than
copper
so if you see hydrogen we have things
here because if you take the suppose
iron or you shake potassium anything
Union take so we can take iron and you
take s to sf4 right you get feso4 plus
s2 that this iron is able to displace
hydrogen also around this so hydrogen
iron is ever hydrogen in fact lead will
also be able to displace hydrogen from
this s2i so forth so you would take PB
and using h2 so4 you get pbso4 plus s2
but copper will not be able to displace
this one so this hydrogen is above so
that's why if you see gold and silver
also they have done like this so end of
the day this displacement reaction is
the best way actually to find reactivity
of the element correct for example let's
suppose we want to find the reactivity
of iron and copper okay so what we'll do
we have this iron will take this copper
solution of a sulphate you react it you
get copper plus Fe s a that means what
island is has kicked out copper from the
solution so iron is more reactive than
power
same thing you take for let's suppose my
knees in copper you want to take again
do the same thing you have this Magnus
you take copper solution and you will
find that you get mg so4 plus power
source Magnus has my name is - power -
copper and the copper is Avila so with
this I can say that Magnus is more
reactant top why does more reactive and
all we will study necessary atoms will
study the structure of atoms the
electrons and all and the valence
electron and stability thing that we
will do later maybe the next two
chapters but non sunder standing magnus
is
they acted then cop correct so these
kind of thing you can easily find
example zinc and copper if you also you
want to find jink is stronger than
copper or not you take Jing can you take
copper you take copper sulphate solution
alai again then what you will get is
zinc sulfate and you get caught so here
also if you see Jing has kicked out
copper in kampala so that is Jing is
more stronger than so let suppose you
take sodium in hydrogen so hydrogen is
not a metal but we have put this in this
because sometimes hydrogen B is like a
metal also so we have the sodium and
let's take this hydrochloric acid you
see that this becomes NaCl and my
hydrogen is out so sodium has kicked out
hydrogen from this and recommend C so
now is the question time the first
question is why sodium emerged in
corrosive because sodium is very
reactive
so sodium it will react with moisture in
the water air too becomes NaOH so that's
why sodium is kept in the carotenoids
well you should not get in contact with
what like not connected moisture all you
had to write the equation for island
with steam so we have this iron he has a
steam in this water they really hot
this gives fe3o4 plus is to be in
balance this three iron middles make it
three here three three combine hydrogen
is two two oxygen is 4 here so make it
four here and since it is four is eight
hydrogen not need it for it this is my
reaction of iron with steam calcium and
potassium with water so let us do this
calcium is ca with water is h2o gives CA
o H 2 cos 2 plus hydrogen plus heat
so there's balance this calcium is one
one correct only oxygen is two here you
get two here
so hydrogen becomes four hydrogens four
it's all balanced similarly potassium
calcium is key as water gives potassium
hydroxide KO h plus h2 plus heat it's
balanced this potassium is one one
balance oxygen is one one balanced
hydrogen is three here
hydrogen is only ones respond apply with
the two you get four so you were
multiplied with 2 2 + 2 4 becomes 2
potassium it's true
this is balanced correct so this is my
balance the question says a sample of
four elements we're taken and added to
the following solution one by one the
following results will obtain right so
we have to find what do you observe if B
is added two copper surfaces the first
question and we have to arrange the
activity I mean these things in the
decreasing order of reactivity so let's
see this properly please pay attention
here the first one says that even react
with iron sulfate there's no reaction
that means a light here a plus islands
lipid is feso4 there is no reaction
there is no reaction that means a is
lesser than items so let me light iron
somewhere here somewhere will write iron
and my a is below I correct this part is
done second it says when e is react with
copper sulfate a react with copper
sulfate there is a displacement that
means e is weaker than copper correct
sorry a strong hand copper that's my
decision something is displacing copper
that is a stronger than copper so copper
will be somewhere here hope you
understand this since he was not able to
displace
Island is weaker than iron so I mean
this is my reactivity series right
the this is more reactive to less
reactive this is more reactive less so
since a was not able to displace RN
there is iron is more reactive than he
but a was able to displace copper is
more reactive than power this is also
that the third is B is then react with
iron sulfide no displacement that is B
plus feso4 there is no displacement as B
is weaker so it is there is a
displacement so the displacement there
is a displacement there that means B is
able to displace iron from there that
means B is stronger than atom so we'll
put be some wherever valid
correct be stronger arm that is bees
even if displaced on something this is
done when B reacts with zinc sulphate
there is no reaction so I am right here
then B with zinc sulphate no reaction is
B is weaker than zinc sulphate right
so zinc sulphate is stronger than bee
that is correct so we'll put Jing is
stronger than bee somewhere here
hope you understand when B reacts with
zinc sulphate nothing happens as B is
weaker than zinc zinc is stronger than
bee that is done this is also the cement
reacts with iron there is no reaction so
C+ feso4 there is no reaction there is c
is what weaker than iron so we can and I
can place see anywhere from here I can
put C anywhere C can be somewhere here
somewhere down this line right we don't
know where it is but somewhere down C
will be late Sun went down somewhere
down the iron correct we don't know the
actual position where C will be but
somewhere here it will be C so C is
there C with copper sulfate no reaction
C with copper sulfate no reaction so
that means C should be somewhere below
copper sulfate right so C should be
somewhere here it
no correct because he is not even
reacting with copper so C is somewhere
below copper zinc sulphate C with zinc
sulphate no reaction that is C is below
Ching she's already below Jing so going
to worry but we don't know the correct
position of C right maybe she is just
below C we don't know or somewhere here
but see something below C so we don't
know
see when reacted with silver nitrate
there is a displacement that means C is
stronger than silver that means after C
you have silver surveys let us suppose C
is silver is here then C should be
somewhere here right I'll put C's here
correct no issue that is also done D
Wendy reacts with iron sulfate no
reaction that is d is weaker than iron
so D gave me some anywhere here listed
here timing I will put here for timing D
be reacts with copper sulfate no
reaction no reaction so D will be below
popper right anywhere below copper D
reacts with zinc sulfide no reaction so
these anyway below Jing D reacts with
silver nitrate no reaction so D reacts
with silver nitrate no reaction that is
d is even bigger than silver that is d
is somewhere below silver actually that
the actual position of D D is actually
here at least right so this is my order
the chat pod zinc is most reactive and D
is less reactive right so now the
question is what will you observe is B
is added to copper server solution so B
is added to copper sulfate solution if
you see B is more reactive than copper C
B is more reactive than copper that
means if B is added to copper sulphate
react solution there will be a
displacement reaction why because b is
more stronger than cost part is done
second part arrays the order is elements
in the decreasing order of reactivity
the most reactive is what
be and then I have a then I have C and
then I have this is the order yes hope
you understand half done
Iraqi to all these elements even iron
sulfate law reacts that is e is weaker
than armed I read it a with coffin
displacement this is stronger than
copper similarly V with iron
displacement is B is stronger than iron
be with Jing nor death evidence B is
weaker than zinc is zinc is stronger and
that's how we found this reactivity
sleaze once I have reactivity series I
can answer any of them the Sigma makes
happen which gas is produced when dilute
hydrochloric acid is added to the
reactive metal so I know that metal plus
HC and dilute gives me hydrogen gas that
part is all right the chemical reaction
when I will react with h2o suppose so I
have iron it reacts with h2 so4 it will
give you Fe s o4 plus hydrogen gas and
this is my reaction correct what will
you observe when zinc is erect the
solution of iron sulfate that is I have
jink
I have iron sulfate I know that jink is
more reactive than iron sulfate that
means it will displace it will displace
island from this it will become zinc
sulfate plus I right you have zinc is
more reactive in aren't we know from the
reactivity series thank you