\textbf{206--} Considering the following reactions:
$$\text{H}_2(\text{g}) + \text{Cl}_2(\text{g}) \xrightarrow{\text{H}_2\text{O}(l)} 2\,\text{HCl}(\text{aq}), \quad \Delta H = -184.6\ \text{kJ}$$
$$\text{H}_2(\text{g}) \xrightarrow{\text{H}_2\text{O}(l)} 2\,\text{H}^+(\text{aq}), \quad \Delta H = 0$$
$$\text{HCl}(\text{aq}) \rightarrow \text{H}^+(\text{aq}) + \text{Cl}^-(\text{aq}), \quad \Delta H = -75.2\ \text{kJ}$$
Based on Hess's law, for the conversion of $\text{Cl}^-(\text{aq})$ to $\dfrac{1}{2}\text{Cl}_2(\text{g})$, how many grams is the substance and what is $\Delta H$?
(1) $-176.5$ g, \quad (2) $-176.5$ g, \quad (3) $+176.5$ g, \quad (4) $+167.5$ g, $-167.5$