S1.5.3 The gas laws (part 1) | Mike Sugiyama Jones (MSJ Chem) | YouTubeToText
YouTube Transcript: S1.5.3 The gas laws (part 1)
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this is msj chem in this video i'll be
looking at the gas laws
in this video i'll be looking at the
following gas laws
the first gas law is the relationship
between pressure and volume
at constant temperature which is also
known as boyle's law
next is the relationship between volume
and temperature at
constant pressure which is also known as
charles's law
we'll also look at the relationship
between pressure and temperature
at constant volume which is also known as
as
gala sacks law after that we look at the
relationship between volume and amount
in moles
at constant temperature and pressure
which is also known as
avogadro's law and finally we look at
the combined gas law
we'll start by looking at the
relationship between pressure and volume
at constant temperature
which is also known as boyle's law this
states that the volume occupied by a gas
is inversely proportional to its pressure
pressure
in equation form boyle's law can be represented
represented
in three different ways the first is the pressure
pressure
multiplied by the volume is equal to a
constant k
the second is that pressure is directly proportional
proportional
to 1 over volume and the third way is p1
multiplied by v1 equals p2 multiplied by v2
v2
graphically boyle's law can be
represented in two different
ways on the left we have a graph of
pressure against
volume from the graph we can see that as
the pressure decreases
the volume increases on the right we
have a graph of pressure against one
over volume
the straight line produced shows that
pressure is directly proportional
to one over volume next we have the
relationship between volume and
temperature at constant pressure
which is also known as charles's law
this states that the volume occupied by
a gas is directly proportional to its
absolute temperature in kelvin
in equation form this can be represented
as v
is directly proportional to t it can
also be represented as v
over t equals a constant k on the right
we have a graph of volume
against absolute temperature in kelvin
from the graph we can see that volume
is directly proportional to temperature
in kelvin
charles's law can also be represented as
v1 over t1
is equal to v2 over t2 the next gas law
that we look at
is the relationship between pressure and
temperature at constant volume
which is also known as gala sacks law
this states that the pressure exerted by
a gas
is directly proportional to its absolute
temperature in kelvin
this can be represented as p is directly proportional
proportional
to t or p over t
is equal to a constant k on the right we
have a graph of pressure against
absolute temperature in kelvin from the
graph we can see that pressure
is directly proportional to temperature
in kelvin
gaelic's law can also be represented as p1
p1
over t1 is equal to p2 over t2
the next gas law that we look at is the
relationship between volume and amount
of moles
at constant pressure and temperature
which is also known as
avogadro's law this states that the
volume occupied by a gas is directly
proportional to the amount in moles of gas
gas
so in equation form this can be written
as v is directly proportional
to n or v over n is equal to a constant k
k
on the right we have a graph of volume
against the mounting moles of a gas
from the graph we can see that volume is
directly proportional to amount in moles
another way of representing avogadro's
law is v1 over n1
is equal to v2 over n2
the final gas law that we look at is the
combined gas law which combines
boyle's law charles's law and gayle
sachs law
so the combined gas law is p1 multiplied
by v1
divided by t1 is equal to p2
multiplied by v2 divided by t2
the combined gas law can also be
represented as p1
multiplied by v1 divided by t1 is equal
to a constant k
so that's all from this video in the
next video i'll be going through
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