CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures
Problem
Select the incorrect statement :
(1) Compressibility factor for an ideal gas is unity.
(2) A real gas approaches ideal gas nature at high temperature and low pressure.
(3) The compressibility factor Z>1 , then for a gas when repulsive forces predominate.
(4) van der Waals' constant ' a ' for NH3 is smaller than N2 .