The volume thermal expansion coefficient of an ideal gas at constant pressure is

Explanation

For an ideal gas, pV= nRT As P is constant, we have `p.dV=nRT`
`therefore" " (dV)/(dT)=(nR)/(p)`
Accordign to volume expansion, dV=`Vgammadt` `or" " gamma=(1)/(V).(dV)/(dT)=(nR)/(pV)=(nR)/(nRT)=(1)/(T)`
`therefore" " gamma=(1)/(T)`