Physical and Chemical Properties of Water Video Lecture - JEE

hello friends this meeting on hydrogen
part 14 is brought to you by exam fear
calm
no more fear from exam let's talk about
some physical properties of water the
first one is you must have seen is
colorless and tasteless doesn't have any
taste it tastes what you feel is the
taste of the middle that is held in the
water but it is Shelly this is water it
doesn't have any taste it doesn't have
any color it has high freezing point
high boiling point
hi mica preparation when you compare h2o
with h2s or let us see why because in
this case we have hydrogen bond because
of hydrogen bond because oxygen is
electrolyte here we have parsley
negative charge get positive positive
shall in hide anymore in cell block
right so you compare h2 over this to s
or h2s similar structure but in this
case we'll say h2 has higher boiling and
melting point and higher heat of
vaporization because the hydrogen one
correct it has higher specific heat
capacity higher thermal conductivity
high surface tension higher diaper
moment higher dielectric constant yeah
studied all sneak past few slides can we
talk about surface tension Bible
movement and other stuffs it has high
heat of vaporization and this is
responsible for climate and more it
impressions motivation in our body we
have huge amount of water and that helps
to moderate the temperature of the body
it is a very good solvent is very good
solvent is also required for metabolism
for human body we or the reader we need
drink water because all this metabolic
activity in the body is the consumed
water right and because the hydrogen
bonding with polar molecule even some
covalent compounds like alcohol and
carbohydrates can desert water so it's
the universal swapping see the ionic
compounds anyway it is all water and so
on the polar covalent so some other
covalent compounds also dissolve water
because of the final model so if you see
compare the water property indeed to
mobile will study d2 in the next few
slides there is a call heavy water
if you compare this will think slightly
later also so if you see the molecular
mass hydrogen is less d2 is more melting
point of sleep you see the DQ is more
boiling point also a little more and
most of the thing if you see is more
actually in this case of T towards you
tell you what but talk about other
things density of water is one
dielectric constant in 78.3 9 and
enthalpy of formation is minus two
eighty five point nine enthalpy of
vaporization is porcupine 6x enthalpy of
freezing air strikes systems let's take
out some chemical property of water the
first thing is neutral to litmus paper
the second thing is it has small
decision it is very stable it is a very
stable it doesn't this is the demon
psychic machine you have water you need
it normally normal temperature and very
high temperature it doesn't dissociate
you need the extremely high temperature
to form attached to mineral very very
stable
this is amphoteric that means act as a
second base
thank you amphoteric it is both acid
then basically it goes under both
oxidation reduction in oxidized it can
be used also it has a very high
hydrating tendency so in this case if
you see water can hydrolyze it can
hydrolyze you can hydrolyze many made
non-metric oxide nonmetallic oxide or
halides or metallic phosphide
metalic phosphide or carbide metalic
nitrites
so you can see how the reaction asked if
example let's take some hallux so you
have non metallic let's say C and for
you react with water it will give you
this I was hyper focused in balance this
yeah so you can hydrolyze non metal
halides right and also you can see
metalic carbide phosphide nitrite let's
take this guy see you see do you think
the carbide see if you add water I guess
he becomes cos2 in hydrogen gas so you
see this becomes acidic this becomes PC
right so I mean water it reacts with of
metallic oxides halides and nonmetallic
phosphide carbide hydride nitride
perform a 3-car base in solution correct
the next is the hydration so water
combines with some metal to form
hydrants for example cucl do moment you
add water it becomes cocl 2 dot C says
choose from blue it became right so here
- it is nothing but you add water and
water is absorbed then it becomes dot n
h2o right another example can be see us
so for you add 5h to this it becomes as
you see this guy is white gently and
this is water is it change the color so
this is called hydration please notice
the different in hydro lighting the
action hydration in hydration there's no
reaction essence you just add water and
the color change right but in case of
hydrating reaction the metalic
nonmetallic oxide or halides
automatically phosphide copper nitrate
they react with water or hydrolyze water
to form a sense of ease example in this
kissing on the base you h2 and
let's see and also it's good solvent so
do it Spooner characteristic water is
very good solid in both and again non
ionic compounds thank you
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