Quiz | Solubility and Precipitation Reactions
General Chemistry 3 - Quiz
What is the solubility-product constant expression for the dissolution of tin(II) hydroxide?
Solubility-product constant Ksp: equilibrium-constant of a dissolution reaction
Dissolution of tin(II) hydroxide: Sn(OH)2 (s) Sn2+ (aq) + 2 HO- (aq)
What is the molar solubility of BaCO3?
Dissolution of BaCO3: BaCO3 (s) Ba2+ (aq) + CO32- (aq)
According to the reaction stoichiometry, molar solubility s of BaCO3 (s) = [Ba2+] = [CO32-]
Ksp = [Ba2+] [CO32-] = s2 ⇒ s = Ksp1/2
What is the molar solubility of Ca3(PO4)2?
Dissolution of Ca3(PO4)2: Ca3(PO4)2 (s) 3 Ca2+ (aq) + 2 PO43- (aq)
According to the reaction stoichiometry, molar solubility s of Ca3(PO4)2 = =
Ksp = [Ca2+]3 [PO43-]2 = (3s)3 x (2s)2 = 27s3 x 4s2 =108s5 ⇒ s =
In which conditions would Ag3PO4 be least soluble?
AgNO3 and Ag3PO4 have a common ion: Ag+
Common ion effect: the solubility of an ionic solid decreases when a common ion is present in solution
Which of the following sentences is incorrect?
The solubility of an ionic solid is increased by the formation of a soluble complex ion
Why Al(OH)3 is soluble in basic solution but insoluble in neutral solution?
Al(OH)3 is an amphoteric metal hydroxides:
Neutral solution: insoluble
Basic solution: Al(OH)3 (s) + HO- (aq) ⇌ [Al(OH)4]- (aq) [formation of a soluble hydroxy complex ion]
Acidic solution: Al(OH)3 (s) + 3 H3O+ (aq) ⇌ Al3+ (aq) + 6 H2O (l) [acid-base neutralization]