Ideal Gas Relations
For an ideal gas, the heat capacity is constant with temperature. Accordingly we can express the enthalpy as and the internal energy as . Thus, it can also be said that the heat capacity ratio is the ratio between the enthalpy to the internal energy:
Furthermore, the heat capacities can be expressed in terms of heat capacity ratio ( ) and the gas constant ( ):
It can be rather difficult to find tabulated information for, since is more commonly tabulated. The following relation, can be used to determine :
Where n is the amount of substance in moles.
Read more about this topic: Heat Capacity Ratio
Famous quotes containing the words ideal, gas and/or relations:
“The difference between the actual and the ideal force of man is happily figured in by the schoolmen, in saying, that the knowledge of man is an evening knowledge, vespertina cognitio, but that of God is a morning knowledge, matutina cognitio.”
—Ralph Waldo Emerson (1803–1882)
“Droning a drowsy syncopated tune,
Rocking back and forth to a mellow croon,
I heard a Negro play.
Down on Lenox Avenue the other night
By the pale dull pallor of an old gas light”
—Langston Hughes (1902–1967)
“So soon did we, wayfarers, begin to learn that man’s life is rounded with the same few facts, the same simple relations everywhere, and it is vain to travel to find it new.”
—Henry David Thoreau (1817–1862)