Question

The temperature at which the second virial coefficient of a real gas is zero is called :

• A. critical temperature
• B. Boyle's temperature
• C. boiling point
• D. none of these

Answer 1

The correct option is B Boyle's temperature

The temperature at which the second virial coefficient of a real gas is zero is called Boyle's temperature.

It is the temperature at which a real gas obeys Boyle's law.

It is given by the expression $T_B=\frac{a}{bR}$ where a and b are the van der Waal's constants.

Boyle's temperature of a gas is always higher than its critical temperature.

Hence, the correct answer is option $\text{B}$.