Question

A gas is said to be thermally perfect when

• A. \(p = \rho R T\)
• B. internal energy and enthalpy are functions of temperature alone
• C. \(c_v + c_p(T)\) and \(c_p = c_p(T)\)
• D. temperature of the gas is less than 500 K

Hint:

This assumption is valid for ideal gases at moderate temperatures.

Answer 1

The Correct Option is B

A thermally perfect gas assumes that internal energy and enthalpy depend only on temperature, simplifying many thermodynamic relations.