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  • Calculating Chloride Ion Concentration: A Step-by-Step Guide
    Here's how to solve this problem:

    1. Understand the Reaction

    Silver nitrate (AgNO₃) reacts with chloride ions (Cl⁻) to form a white precipitate of silver chloride (AgCl):

    AgNO₃(aq) + Cl⁻(aq) → AgCl(s) + NO₃⁻(aq)

    2. Calculate Moles of Chloride

    * Molar mass of AgCl: 143.32 g/mol

    * Moles of AgCl: (8.07 g AgCl) / (143.32 g/mol) = 0.0563 mol AgCl

    Since the reaction is 1:1, the moles of chloride ions are equal to the moles of AgCl: 0.0563 mol Cl⁻

    3. Calculate Chloride Concentration

    * Volume of solution: 229 mL = 0.229 L

    * Concentration of chloride ions: (0.0563 mol Cl⁻) / (0.229 L) = 0.246 M

    Therefore, the concentration of chloride ions in the 229 mL solution is 0.246 M.

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