Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.

Start Practicing

Worksheet: Ideal Gases


Which of the following graphs incorrectly depicts the relationship between two properties of an ideal gas?

  • A
  • B
  • C
  • D
  • E


If gas X behaves like an ideal gas, which of the following accurately depicts the relationship between its pressure ( 𝑃 ) and compressibility factor ( 𝑍 ) ?

  • A
  • B
  • C
  • D


Which of the following statements is incorrect?

  • AThe entropy of a system always increases with an increase in temperature under either constant-volume or constant-pressure conditions.
  • BIn cyclic thermodynamic processes, it is always true that the net changes in internal energy ( Ξ” π‘ˆ ), entropy ( Ξ” 𝑆 ), and enthalpy ( Ξ” 𝐻 ) of a system are zero (i.e., Ξ” π‘ˆ = Ξ” 𝑆 = Ξ” 𝐻 = 0 n e t n e t n e t ).
  • CIn reversible adiabatic processes, it is always true that Ξ” 𝑆 = 0 and Ξ” π‘ˆ = 𝑀 (work).
  • DAn isothermal expansion of an ideal gas always gives Ξ” π‘ˆ > 0 and Ξ” 𝑆 = 0 .


At a fixed temperature and pressure, which of the following quantities is not the same for samples of H e ( ) g and N e ( ) g ?

  • AAverage kinetic energy of atoms
  • BMolar heat capacity
  • CCompressibility
  • DAverage speed of atoms
  • EMolar concentration