Question

If we mix two liquids and heat is released then

• A. $\Delta H_{mix}>0$
• B. $\Delta H_{mix}<0$
• C. $\Delta H_{mix}=0$
• D. None of these

Answer 1

The correct option is B $\Delta H_{mix}<0$

‘H’ represents enthalpy.
$H_{final}-H_{initial}=\Delta H_{mix}$ As energy as heat is released,the final enthalpy of the liquid is less than initial enthalpy. So, $\Delta H_{mix}=H_{final}-H_{initial}<0$