describe, explain and write equations for the reactions of thechlorides of elements in Period 3 with water

Sure, let's go through the reactions of the chlorides of elements in Period 3 with water.

1. Sodium Chloride (NaCl): Sodium chloride is a neutral salt. When it dissolves in water, it dissociates into Na+ and Cl- ions. The equation for this reaction is:

   NaCl(s) + H2O(l) -> Na+(aq) + Cl-(aq)

2. Magnesium Chloride (MgCl2): Magnesium chloride is a salt that dissolves in water to produce Mg2+ and Cl- ions. The equation for this reaction is:

   MgCl2(s) + H2O(l) -> Mg2+(aq) + 2Cl-(aq)

3. Aluminum Chloride (AlCl3): Aluminum chloride reacts with water to form a solution of aluminum hydroxide and hydrochloric acid. The equation for this reaction is:

   AlCl3(s) + 3H2O(l) -> Al(OH)3(s) + 3HCl(aq)

4. Silicon Tetrachloride (SiCl4): Silicon tetrachloride reacts violently with water to produce silicic acid and hydrochloric acid. The equation for this reaction is:

   SiCl4(l) + 2H2O(l) -> Si(OH)4(aq) + 4HCl(aq)

5. Phosphorus Trichloride (PCl3): Phosphorus trichloride reacts with water to produce phosphorous acid and hydrochloric acid. The equation for this reaction is:

   PCl3(l) + 3H2O(l) -> H3PO3(aq) + 3HCl(aq)

6. Sulfur Dichloride (SCl2): Sulfur dichloride reacts with water to produce sulfurous acid and hydrochloric acid. The equation for this reaction is:

   SCl2(l) + H2O(l) -> H2SO3(aq) + 2HCl(aq)

7. Chlorine (Cl2): Chlorine reacts with water to produce hydrochloric acid and hypochlorous acid. The equation for this reaction is:

   Cl2(g) + H2O(l) -> HCl(aq) + HOCl(aq)

Please note that the reactions of phosphorus trichloride, sulfur dichloride, and chlorine with water are not balanced. The balanced equations would require coefficients in front of the water, hydrochloric acid, and other products.