Let
20.9 J of heat be added to a particular ideal
gas. As a result, its
volume changes from 63.0 to
|
Solution: Click For PDF Version (a) The initial volume of the gas is
The final volume of the gas is
The work done
on the gas at constant pressure
As the heat
absorbed during the process
(b)
The quantity
of the gas is
(c) Heat capacity at constant volume and the heat capacity at constant pressure are related as
Therefore, the molar heat capacity at constant volume will be
|
while the pressure remains constant at
1.00 atm. (a) We have to calculate the change
in the internal energy of the gas. (b) If
the quantity of the gas present is
mol,
we have to calculate the molar heat capacity
at constant pressure. (c) We
have to find the molar heat capacity at constant volume.
will be
,
the change in the internal energy of the gas can be calculated using
the first law of thermodynamics. It will be
We can calculate the change in temperature of the gas using the
ideal gas equation of state.
Therefore,
the molar heat capacity at constant pressure of this ideal gas will
be
