Chemistry · THERMODYNAMICS

Consider the following enthalpy changes of solution of gaseous \( \text{HCl} \): \( \text{HCl(g)} + 25\text{ aq} \rightarrow \text{HCl}\cdot 25\text{ aq};\; \Delta H = -72.03\text{ kJ mol}^{-1} \) \( \text{HCl(g)} + 40\text{ aq} \rightarrow \text{HCl}\cdot 40\text{ aq};\; \Delta H = -72.79\text{ kJ mol}^{-1} \) The enthalpy of dilution for adding \( 15\text{ mol} \) of water to a solution containing \( 1\text{ mol} \) of \( \text{HCl} \) in \( 25\text{ mol} \) of water is:

1. -0.76 kJ mol\( ^{-1} \)
2. +0.76 kJ mol\( ^{-1} \)
3. -144.82 kJ mol\( ^{-1} \)
4. -1.52 kJ mol\( ^{-1} \)