Consider the following statements:1. In an ideal gas, there are no inter molecular forces of attraction and repulsion2. At very low pressure, all gases and vapours approach ideal gas behaviour3. Enthalpy of an ideal gas depends only on temperatureWhich of the above statements are correct?(A) 1, 2 and 3 (B) 1 and 2 only (C) 1 and 3 only (D) 2 and 3 onlyKey: (D)Exp: Ideal gas assumption states that there is no intermolecular forcesAll real gases show deviation from the ideal gas lawPVi.e.,nRTvalues are not close to 1. But for velocityLow pressure P?0 OR very high temperature there values approach towards unity? ? ? ? pfixed fixedEnthalpy of ideal gas H mc T H f T? ?? ? ? ?1
