Question

The relationship between pressure (P),

volume (V), and temperature (T) for
an ideal gas is stated by the Ideal Gas
Law: PV = nRT, where n is the number
of moles and R is the universal gas
constant. If n is kept constant, which of
these statements is not true according to
the equation?
A Decreased volume at constant
pressure reduces temperature.
B Decreased volume at constant
temperature increases pressure.
C Decreased temperature at constant
volume reduces pressure.
D Decreased temperature at constant
volume increases pressure.

Answer 1

A

Explanation:

For an ideal gas : PV=RT

And the internal energy of an ideal gas:

E

in

​

=

2

3

​

RT

E

in

​

=

2

3

​

PV

V

E

in

​

​

=

2

3

​

P

Energy density (E)=

2

3

​

P

P=2/3E