# Equation of state for an ideal gas

## Homework Statement

What condition must the gas be in for this equation to hold true?

## The Attempt at a Solution

the gas has to be in constant pressure and volume and temperaute

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Astronuc
Staff Emeritus
How about writing the relevant equation?

And what is mentioned in one's textbook or course notes?

PV= nRT
What condition must the gas be in for this equation to hold true?

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the gas has to be in constant pressure and volume and temperaute

Hootenanny
Staff Emeritus
Gold Member
PV= nRT
What condition must the gas be in for this equation to hold true?

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the gas has to be in constant pressure and volume and temperaute
Nope, not quite (if P,V and T were always constant what would be the point of the equation...? :tongue2:). When we say an ideal gas, what do we assume about the gas?

PV=nRT

condtion to be valid:

the gas has to be an ideal gas,

1.gas composed of seprate particles
2.particles behave as point masses
3.point of mass are far apart and do not exert any force

is this correct??

Hootenanny
Staff Emeritus
Gold Member
PV=nRT

condtion to be valid:

the gas has to be an ideal gas,

1.gas composed of seprate particles
2.particles behave as point masses
3.point of mass are far apart and do not exert any force

is this correct??
Sounds about right to me, but I would add ellastic collisions to that list. 