Equilibrium

Question 1

Equilibrium

Answer 1

A state of a reaction when
[reactants] = [product]

Question 2

Insoluble ionic compound Equilibrium

Answer 2

Ionic compounds exist in solid form and in ionic form at constant concentrations

Question 3

Solubility Product

Answer 3

MX2(s) <—-> M2+ (aq) + X- (aq)
KSp= [M2+][X-]

Question 4

Ksp of CaF2

Answer 4

CaF2(s) <——-> Ca 2+ (aq) + F- (aq)
Ksp= [Ca2+][F-]

Question 5

Reaction Quotient (Q)

Answer 5

Substitutes initial concentrations into equilibrium constant equation. Predicts direction of reaction.
Q = Kc (equilibrium)
Q > Kc (System forming reactants)
Q < Kc (System forming product)

Question 6

Ksp

Answer 6

Solubility Product Constant
- equilibrium constant of a solid dissolving in aqueous solution

Question 7

Ion Product

Answer 7

(Q): solubility equivalent of reaction quotient. Used to determine if a precipitate will form.

• Q > Ksp toward reactant. Supersaturated solution : Precipate forms
• Q = Ksp at saturated solution
• Q < Ksp Unsaturated solution : No precipitate

Question 9

Finding Ksp when given Solubility (g/L)

Answer 9

Solubility of compound > Molar solubility > [ion] > Ksp

Question 10

Difference btwn Acids/bases and Insoluble ionic compounds

Answer 10

• Acids/Bases readily dissociate in aqueous soln creating ions.
• Insoluble Ionic Compounds do NOT completely dissociate in Aqueous soln

Question 11

Molar solubility

Answer 11

Maximum [solute] that can dissolve in a solvent to form a saturated solution.

Question 12

Calculating solubility when given Ksp

Answer 12

Ksp > [ion] > molar solubility > solubility