Data and Results: Fill in the formula, ions, equilibrium equations and expressio
ID: 1028974 • Letter: D
Question
Data and Results: Fill in the formula, ions, equilibrium equations and expressions, constant, plI's, and % error. Ion Spectat! Net-lonic | Equilibrium | Value of Hydrolyz or Ion Equation forExpression Equilibrium Constant 0.10 M Expected Equilibrium Theoretic Actua to | (specifyK, K. | (specify, ks. Hydrolysis (specify K., Kal pH IpH Error Distilled water None None None H20 C H O: (ag)+ Sodium acetate CH Na K 5.6 x 10-10 887 OH (aq) Sodium chloride Sodium carbonate Ammonium chloride Zinc chloride Copper (II) nitrate Aluminunm chloride 4.00 Magnesiom sulfateExplanation / Answer
Table
0.1 M ammonium chloride
Ion expected to hydrolyze : NH4+
spectator ion : Cl-
net ionic equation : NH4+ + H2O <==> NH3 + H3O+
equilibrium expression : Ka = [NH3][H3O+]/[NH4+]
value of equilibrium constant : 5.55 x 10^-10
Theoretical pH : 5.13
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0.1 M zinc chloride
Ion expected to hydrolyze : Zn2+
spectator ion : Cl-
net ionic equation : Zn2+ + 2OH- <==> Zn(OH)2
equilibrium expression : 1/Ksp = 1/[Zn2+][OH-]^2
value of equilibrium constant : 2 x 10^16
Theoretical pH : 5.63
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0.1 M copper nitrate
Ion expected to hydrolyze : none
spectator ion : none
net ionic equation : H2O <==> H+ + OH-
equilibrium expression : Ka = [H+][OH-]
value of equilibrium constant : 1 x 10^-14
Theoretical pH : 7
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0.1 M aluminium chloride
Ion expected to hydrolyze : Al3+
spectator ion : Cl-
net ionic equation : Al3+ + 3OH- <==> Al(OH)3
equilibrium expression : 1/Ksp = 1/[Al3+][OH-]^3
value of equilibrium constant : 1 x 10^33
Theoretical pH : 5.39
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0.1 M magnesium sulfate
Ion expected to hydrolyze : SO4^2-
spectator ion : Mg2+
net ionic equation : SO4^2- + H2O <==> HSO4- + OH-
equilibrium expression : Kb = [HSO4-][OH-]/[SO4^2-]
value of equilibrium constant : 8.3 x 10^-13
Theoretical pH : 7.45
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