Question

Which of the following is satisfied by an ideal solution?

• A. Formation of an azeotropic mixture
• B. $△S_{mix}=0$
• C. Raoult's law is obeyed under particular set of conditions only
• D. $△H_{mix}=0$

Answer 1

Answer: (D)

$△H_{mix}=0$

An ideal solution obeys Raoult's law in any condition. For an ideal solution, the enthalpy of the mixture remains constant and there is no volume change. Hence, $\Delta H_{mix}=0$ and $\Delta V_{mix}=0$.

Hence the correct option is D.