Question

The molar heat capacity for an ideal gas 

(a) cannot be negative 

(b) must be equal to either C_V or C_p 

(c) must lie in the range C_V ≤ C ≤ C_p 

(d) may have any value between -∞ and -∞ 

Answer 1

Correct Answer is: (d) may have any value between -∞ and -∞

 The molar heat capacity has the general definition

C = 1/n . ΔQ/ΔT ,

where n = number of moles, ΔQ = heat absorbed by the gas and ΔT = rise in temperature of gas.

It is possible to obtain almost any set of values for ΔQ and ΔT by proper selection of a process.