The volume (in mL) of required to quantitatively precipitate chloride ions in of is . [] (Nearest integer)

Question

The volume (in mL) of   required to quantitatively precipitate chloride ions in  of  is . [] (Nearest integer)

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Strategy:
 In the coordination compound , only the chloride ions outside the coordination sphere (ionizable) react with . Relate the moles of the complex to the moles of chloride, then calculate the required silver nitrate volume.

Step 1: Calculate moles of the complex
Molar mass .

Step 2: Calculate moles of chloride ions
Each molecule provides 3  ions.

Step 3: Calculate Volume of } \ce{AgNO3}
Ratio  is .

Rounding to the nearest integer gives 27.

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