Acids, Bases and Salts Video Lecture - Class 11

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part 26 is brought you by exam fear calm
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the video please make sure that you have
watched all the previous part so we
talked alot about acid bases on let's
see this acid in nature the things
around us if you see our body itself
hydrochloric acid is present in the but
it's very strong acid in our body
produced 1 to 1.5 liter per day inner
stall and this is very very unique about
that is it so in this we have one of HCl
lot of ice is there in the destined is
respond digestive system correct
also if you see the vinegar which we use
in charmolue something not normal that
has acetic acid we talk about lemon
orange this as centric I said ascorbic
acid tartaric acid that is foreign
family if you see lemon has this acetic
acid or in the Slovak si and tamarind
has tactics all these acids are that the
national assets which we have you should
use in our daily life you must have used
lemon or orange our time interview in
your life right because these things to
have as they already told definition a
pass it goes it turns a litmus paper
color so if you just want to find
whether it is acid or not you just use a
net much paper and blue litmus liver
will turn red that means it is acid and
if my red turns to blue please so a
memory device
B is blue B is base right color matches
are there is nothing for odd but these
blue bees days so the final product is B
that means base right base will make
things look these loves blue base to
make things look acid you can say you
know acid the ball the sounds are the
scaring the scary color is what right
since if something makes things
okay something-something makes things
right that means acid just a memory tip
just remember tip if you want you can
follow else you can ignore also so base
blue max color acid scary scary means
right so anything that comes that
converts on the end color is red it is
acid rain cover is blue in space right
let's talk about short so as I told when
acid-base are mixing right proportion
against our installation the good
example is common salt which we use this
is very common with we call common saw
that combustion you must be no any
sodium chloride the comments are you use
and so on the comments also barium
sulfate sodium nitrate also but so here
is a very common solid we use no data in
general also be use for cooking food and
that's the definition of sort and we'll
take some understand the composition of
nocl little bit more because it is
little common little terrible so if you
see any CL it is in the land lattice
form which means na+ and cl- is like
that right and it is one of the most
important content of a die that is
formed by reaction between HCl and NaOH
I own this reaction from here yes and
seal right and it exists in the solid
state you must have seen salt it has
sodium positive charged and the negative
charge screen ions see na+ and cl- and
they held together by the electrostatic
attractions right and also by the
lettuce in theory just about I think we
discuss about lattice things earlier and
this electrostatic force vector then is
inversely proportional to the dielectric
constant of the medium that's why the
salts and water right so water is a
universal solvent because a high
dielectric are constantly that's why
this sodium chloride dissolves easily
water and also their Wells opportunity
hydration with water
example you see as I have shown water
molecules like this h2o this gas cloud
partial positive charge or some negative
and partial negative right this way a
positive charge will attract CML design
somewhere this guy and this partially
positive charge of our time so negative
in some water and any plus say BCE pace
with what write as plus and minus so
somehow this gets separated into
hydration is important values what you
want to take care it will separate this
sodium and chlorine if you see the
weight signals like this so this is na
plus drops Oh - I am this around this is
for one experiment I'll not give you CH
plus concern always it won't expand in
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