Which of the following statements about an ideal gas are correct?

A $P V / n T$ is the same constant for all ideal gases
BAt STP ( $0^{\circ} C$ , 1 atm) one mole of any ideal gas occupies $22.4 L$
CAt constant $T$ , the compressibility factor $Z = P V / n RT$ of an ideal gas increases with $P$
DBoyle's law and Charles's law can both be derived from $P V = n RT$

Answer: A, B, D

P V = n RT

with universal

R

(A).

V = RT / P = 0.0821 \times 273/1 = 22.4 L

(B). For an ideal gas

Z = 1

at all pressures (C wrong). Holding

T

P

constant in the ideal gas law gives Boyle's and Charles's laws (D).