Mixing of the components in which of the following pair rises the temperature? — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

A rise in temperature indicates an exothermic mixing process ($\Delta H_{mix} < 0$), which corresponds to a negative deviation from Raoult's law. Trichloromethane (chloroform) and ethoxy ethane (diethyl ether) form intermolecular hydrogen bonds between the hydrogen of chloroform and the oxygen of ether, releasing heat. Therefore, correct answer is C.