65 What is the minimum concentration of NH3 (mmol/L) needed to prevent Ağci(s) from precipitating from a 0.91 L solution containing 0.116 mol AgNO3 and 0.016 mol NaCl? Ksp of AgCl = 1.388 x 10-8 72046109.59 Kf of [Ag[NH3]2] = 1.496 x 107 between Ag & NH3 ---> The complex ion formed

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Chapter15: Equilibria Of Other Reaction Classes
Section: Chapter Questions
Problem 3E: How do the concentrations of Ag+ and CrO42- in a saturated solution above 1.0 g of solid Ag2CrO4...
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65
What is the minimum concentration of NH3 (mmol/L) needed to
prevent AgCl(s) from precipitating from a 0.91 L solution
containing 0.116 mol AgNO3 and 0.016 mol NaCl?
Ksp of AgCl = 1.388 x 10-8
72046109.59
Kf of [Ag[NH3]2] = 1.496 x 107
between Ag & NH3
> The complex ion formed
--->
Transcribed Image Text:65 What is the minimum concentration of NH3 (mmol/L) needed to prevent AgCl(s) from precipitating from a 0.91 L solution containing 0.116 mol AgNO3 and 0.016 mol NaCl? Ksp of AgCl = 1.388 x 10-8 72046109.59 Kf of [Ag[NH3]2] = 1.496 x 107 between Ag & NH3 > The complex ion formed --->
-10
For the following two salts: XY has KSP1 = 2.403 × 10 and XZ has
KSP2=4.750 x 10
-15
where X+ is a common cation and Y and Z are anions.
X+ (in solution with a anion that does not interfere in this process)
is added slowly to a flask originally containing 0.045 MY" (aq) and
0.175 MZ (aq).
Thus XZ and XY may precipitate when their concentration reaches
the solubility limit for either.
The more insoluble of the two salts XZ precipitates first.
What is the concentration (mol/L) of Z remaining in the flask when
the more soluble salt XY starts to precipitate?
Assume that the additional X* containing solution makes only a
negligible change in total volume.
Transcribed Image Text:-10 For the following two salts: XY has KSP1 = 2.403 × 10 and XZ has KSP2=4.750 x 10 -15 where X+ is a common cation and Y and Z are anions. X+ (in solution with a anion that does not interfere in this process) is added slowly to a flask originally containing 0.045 MY" (aq) and 0.175 MZ (aq). Thus XZ and XY may precipitate when their concentration reaches the solubility limit for either. The more insoluble of the two salts XZ precipitates first. What is the concentration (mol/L) of Z remaining in the flask when the more soluble salt XY starts to precipitate? Assume that the additional X* containing solution makes only a negligible change in total volume.
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