Solubility and Complexation Equilibria
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Transcript of Solubility and Complexation Equilibria
Solubility and Complexation Equilibria
Chapter 18
Is AgCl soluble or insoluble?
Dissolution Reactions and Ksp Expressions
AgCl(s)
Mg(OH)2(s)
Ca3(PO4)2(s)
Standard Reaction Types:
Determining Ksp Experimentally
The solubility of PbF2 is found to be 0.525 g/L. What is Ksp?
+ - + - -10AgCl(s) Ag (aq) + Cl (aq) Ksp = [Ag ][Cl ] = 1.8 10
Predicting Solubility
2+ 3-3 4 2 4
2+ 3 3- 2 -33sp 4
Zn (PO ) (s) 3 Zn (aq) + 2 PO (aq)
K = [Zn ] [PO ] = 9.1 10
3+ - 3+ - 3 -393FeCl (s) Fe (aq) + 3 OH (aq) Ksp = [Fe ][OH ] = 2.0 10
Can you eyeball rank solubilities?
AgCl
AgBr
AgCl
CaF2
Standard Types
Determining if a precipitation will occur:
Determining if a precipitation will occur:
If 5.0 mL of 1.0 x 10-3 M NaCl is added to 1.0 mL of 1.0 x 10-3 M Pb(NO3)2, will solid PbCl2 (Ksp = 1.7 x 10-5) precipitate? If a precipitate will not form, what chloride ion concentrationwill cause a precipitate of lead chloride to form?
Determining if a precipitation will occur:
If 5.0 mL of 1.0 x 10-3 M NaCl is added to 1.0 mL of 1.0 x 10-3 M Pb(NO3)2, will solid PbCl2 (Ksp = 1.7 x 10-5) precipitate? If a precipitate will not form, what chloride ion concentrationwill cause a precipitate of lead chloride to form?
Common Ion Effect: The presence of an ion common to asolubility equilibrium will decrease solubility of the salt.
Will PbCl2 be more soluble in pure water or in a 0.200 M NaCl solution?
Common Ion Effect: The presence of an ion common to asolubility equilibrium will decrease solubility of the salt.
What is the solubility of PbCl2 in pure water and in a 0.200 M NaCl solution? (Ksp = 1.7 x 10-5)
Common Ion Effect: The presence of an ion common to asolubility equilibrium will decrease solubility of the salt.
What is the solubility of PbCl2 in pure water and in a 0.200 M NaCl solution?