Solubility and Complexation Equilibria Chapter 18.

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Presentation transcript:

Solubility and Complexation Equilibria Chapter 18

Is AgCl soluble or insoluble?

Dissolution Reactions and K sp Expressions AgCl(s) Mg(OH) 2 (s) Ca 3 (PO 4 ) 2 (s)

Standard Reaction Types:

Determining K sp Experimentally The solubility of PbF 2 is found to be g/L. What is K sp ?

Predicting Solubility

Can you eyeball rank solubilities? AgCl AgBr AgCl CaF 2

Standard Types

Determining if a precipitation will occur:

If 5.0 mL of 1.0 x M NaCl is added to 1.0 mL of 1.0 x M Pb(NO 3 ) 2, will solid PbCl 2 (K sp = 1.7 x ) precipitate? If a precipitate will not form, what chloride ion concentration will cause a precipitate of lead chloride to form?

Determining if a precipitation will occur: If 5.0 mL of 1.0 x M NaCl is added to 1.0 mL of 1.0 x M Pb(NO 3 ) 2, will solid PbCl 2 (K sp = 1.7 x ) precipitate? If a precipitate will not form, what chloride ion concentration will cause a precipitate of lead chloride to form?

Common Ion Effect: The presence of an ion common to a solubility equilibrium will decrease solubility of the salt. Will PbCl 2 be more soluble in pure water or in a M NaCl solution?

Common Ion Effect: The presence of an ion common to a solubility equilibrium will decrease solubility of the salt. What is the solubility of PbCl 2 in pure water and in a M NaCl solution? (K sp = 1.7 x )

Common Ion Effect: The presence of an ion common to a solubility equilibrium will decrease solubility of the salt. What is the solubility of PbCl 2 in pure water and in a M NaCl solution?