Question

The compressibility factor for an ideal gas is?

• A. $0$
• B. $1$
• C. $2$
• D. $4$

Answer 1

The correct option is B

$1$

The explanation for the correct option:

Option(B): $1$

• The compressibility factor is known as the ratio of the molar volume of a real gas to the molar volume of an ideal gas.
• We know the compressibility factor of an ideal gas i.e. $\mathrm{PV}=\mathrm{nRT}$, it is generally measured at the constant temperature and pressure.
• Also, we can say that if all these factors will keep constant, then the number of moles of gas will also be a constant or equal to $1.$
• Since the compressibility factor which is also described at a constant temperature and pressure would also be equal to $1,\mathrm{i}.\mathrm{e}.\mathrm{Z}=1.$

Hence, the compressibility factor for an ideal gas is known as $1$, option (B) is the correct answer.