1 mole of Carnallite and 1 mole of the complex [ Cr ( H ₂ O )₅ Cl ] Cl ₂ H ₂ O are dissolved in separate flasks containing water. An excess of aqueous AgNO ₃ solution is added to both flasks. What are the total moles of AgCl precipitated from the first and second flask, respectively?

Step-by-step solution

Carnallite is a double salt with the chemical formula KCl MgCl ₂ 6 H ₂ O . In aqueous solution, it dissociates completely into its constituent simple ions: K ^+ , Mg ²⁺ , and 3 Cl ^- . Therefore, 1 mole of Carnallite yields 3 moles of chloride ions, which will react with excess AgNO ₃ to precipitate 3 moles of AgCl . The complex [ Cr ( H ₂ O )₅ Cl ] Cl ₂ H ₂ O contains one chloride ion inside the coordination sphere (non-ionizable) and two chloride ions outside the coordination sphere (ionizable). In aqueous soluti