kinetic theory of gas

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KINETIC THEORY OF GAS

Theory that used observation about motion and energy partikel’s of substance to investigate adjective is kinetic theory of substance. Adjective that is substance adjective by all as product as flat conduct partikel’s of substance it. Kinetic theory of substance which especially used for particel’s of gas it is kinetic theory of gas.

1. Definition of ideal gas

Gas which observe on this discution is ideal gas, it’s a gas have adjectives such as:

· Ideal gas to consist of particel’s (atom’s or molekul’s) wich amounth is very much and inter particel’s don’t to happen interaction.

· Each particle of gas to move with reckless aim.

· Size of gas particle can be disregard for size room.

· Each crush that to happen perfectly warped.

· Gas particle distributed to spread in all room.

· Valid Newton buv about motion.

In reality no one gas to happen that egniping adjectives of ideal gas, but gas on temperature room and low press to approach adjectives of ideal gas.

2. Equation state ideal gas

a. Boyle-Gay lussac law

Gas at one closed room, situation are fixed with volume, presser, and temperature gas of it. Boyle-Gay lussac to that presser (P), volume (V) and absolute temperature (T) from ideal gas.

p.V= nRT ……. (3.1) p= pressure

V= volume

T= absolute temperature

b. Connection amount mol with massa total and amount particle

If massa total gas = n and amount particle gas = N, so amount mol gas (n) can to definition.

n = m/M ………….. (3.2)

or

n = N/Nօ …………. (3.3)

with:

m = massa total gas

M = massa relatif partikel (atom our molekul) gas

Nօ = sum Avogadro

= 6,02 x 10²³ partikel/mol

When similarity (3.2) input to similarity (3.1) so will result similarity condition gas next:

pV = n.R.T pV =(m/M).R.T pV = N.K.T

with:

N = amount particle gas

Nօ = sum Avogadro

= 6,02 x 10²³ partikel/mol

k = standard Boltzman 1,38 x 10-²³ J/k

k = R/Nօ or R= k. Nօ

3. Pressure and energy kinetic

If snowen massa the particle mօ and fastes average v, pressure gas this fully relasi:

p = ₂ Ēk ( _N )

^{3 V} with Ēk = energy kinetic average

4. Temperature an flat kinetic energy

Connection temperature and flat kinetic energy can we know with this step

Ēk = ₃ k.T

²

5. Inside energy

Inside energy is gas definised see like sub kinetic energy all gas particle. If this energy have N some particle of gas in closing tube, so energy in gas V is range of multiplication N with kinetic energy particle Ēk.U = N. Ēk

 for monotomik gas

U = ₃ N.k.T or U = 3/2 n.R.T

²

 for diatomic gas in law temperature ( ± 300 K)

U = 3/2 N.k.T or U = 3/2 n.R.T

 for diatomic gas in standard temperature (± 500 K)

U = 5/2 N.k.T or U = 5/2 n.R.T

 for diatomic in high temperature (± 1000 K)

U = 7/2 n.K.T or U = 7/2 n.R.T