Sarthaks Test
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A 0.10-mol sample of AgNO3 is dissolved in 1.00 L of 1.00 M NH3. If 0.010 mol of NaCl is added to this solution, will AgCl (Ksp = 1.8 x 10–10) precipitate? (Ag+ and NH3 form the complex ion [Ag(NH3)2] + with Kf = 1.6 x 107 )

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To determine if a precipitate forms, we need to determine the concentration of Ag+ in the solution, and then calculate Qsp to determine if a precipitate forms.

To determine the concentration of Ag+ , due to the large Kf value, assume all of the Ag+ reacts to form the complex and then some dissociates back.

AgCl will NOT precipitate

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