For each of these reactions, provide the following details. • reaction with aqueous sodium hydroxide: ionic equation; type of reaction; colour and state of the copper-containing product. • reaction with concentrated hydrochloric acid: ionic equation; type of reaction; colour and state of the copper-containing product.
Chloride ions may be tested for using aqueous silver nitrate, $\text{AgNO}_3\text{(aq)}$. $\text{Ag}^+\text{(aq)} + \text{Cl}^-\text{(aq)} \rightarrow \text{AgCl(s)}$ $0.303\,\text{g}$ of a sulfur chloride is completely hydrolysed with water. Every chlorine atom present in the sulfur chloride is changed into chloride ions. The solution is diluted to $100.0\,\text{cm}^3$. A $25.00\,\text{cm}^3$ portion of this solution is titrated with $0.0500\,\text{mol dm}^{-3}\,\text{AgNO}_3\text{(aq)}$. The titration requires $22.40\,\text{cm}^3$ of $0.0500\,\text{mol dm}^{-3}\,\text{AgNO}_3\text{(aq)}$. Calculate the empirical formula of the chloride of sulfur. Show all your working.