derivation of kelvin as 273k. how do arrive at 273?

Answer 1

Vt=Vo(1+alpha t) where Vt is the volume at t deg Celsius,Vo is the vol at zero deg Celsius and alpha is the coefficient of voluminar expansion for every degree Celsius which is 1/273
so Vt=Vo(1+1/273t)
for finding out the temp at which the volume of the gas is zero
equating 1+1/273=0 we get t=-273 deg Celsius.so -273 deg Celsius is the temp at which the volume of the gas is zero.taking this as o K the absolute scale came into vogue.
the same expression can be derived from
Pt=Po(1+alpha t)
both these derivations are based upon the Charlie's law

Answer 2

Absolute zero, that is 0 Kelvin or about -273 °C, is the point at which the ideal gas law says all kinetic energy will be removed and a gas will occupy zero volume. Of course, gases change phase at warmer temperatures and it's thermodynamically impossible to actually reach absolute zero (although science has gotten very close).

Answer 3

What we think of as "Absolute Zero" - all moecular motions stops, it can't get any colder than this - happens to be 273 degrees below zero, celsius. So, Kelvin says, let's us a similar system, but we'll renumber it so that Absolute Zero is "ZERO" - 0.

So, 273 degrees warmer than that is Zero Degrees Celsius, and, of course, 273 degrees Kelvin.

Answer 4

The Kelvin scale is based on "absolute 0", a temperature at which, in theory all molecular motion ceases. The conversion scale is (Temp in Centigrade)+273.

Answer 5

Centigrade was set such that there were 100º between the freezing point of pure water at a one atmosphere, and the boiling point of water at one atmosphere.

Kelvin is a temperature scale that uses centigrade degrees, but has its 0 set at absolute zero. [Because of the mathematical property that we can set the origin wherever we want on a number line.]

The freezing point of water using Kelvin is close to 273.15 K.

-edit-
Absolute zero is the temperature at which all motion stops.

Answer 6

The Kelvin scale is the thermodynamic scale. It is derived using thermodynamical entities. It is also equivalent to the perfect gas scale and is hence the fundamental scale and also the SI unit of temperature. To know the exact derivation refer to some physics books

Answer 7

I don't know what your question is but to get to the temp in Kelvin you add 273 to the temp in Celcius

Answer 8

I love this question! Absolute 0 is just a theoretical value extrapolated using many thousands of tests. Absolute zero can not be achieved and measured because it takes some transfer of energy to measure and thus it means that what is being measured could not possibly be absolute zero.

Answer 9

It is based on absolute 0, where there is no molecular movement, which is 273.16 degrees below the freezing point of water, which is the base of the centigrade scale.

Answer 10

if you cool anything it's volume decreases proprtionally.

If you keep cooling it it's volume will be zero at -273 C aka absolute zero or 0k