acid ionization constant k a

acid ionization constant Ka

HX ↔ X- + H+

[X-] [H+]

Ka = ------------------

[HX]

base ionization constant Kb

X + H20 ↔ HX+ + OH-

[HX+] [OH-]

Kb = ------------------

[X]

Write ionization equations and acid ionization constant expressions for the following acids.

HF

HF

HF ↔ H+ + F-

HF

HF ↔ H+ + F-

[F-] [H3O+]

Ka = ------------------

[HF]

HF

HF ↔ H+ + F-

[F-] [H+]

Ka = ------------------

[HF]

HCN

HCN

HCN ↔ H+ + CN-

HCN

HCN ↔ H+ + CN-

[CN-] [H3O+]

Ka = ------------------

[HCN]

HCN

HCN ↔ H+ + CN-

[CN-] [H+]

Ka = ------------------

[HCN]

Write ionization equations and base ionization constant expressions for the following bases.

CH3NH2

CH3NH2

CH3NH2 + H2O ↔ CH3NH3+ + OH-

CH3NH2

CH3NH2 + H2O ↔ CH3NH3+ + OH-

[CH3NH3+ ] [OH-]

Kb = -------------------------

[CH3NH2]

Quick Work

Use the next ten minutes to do problems 10 & 11 on

pages 605 & 606

HClO2

HClO2

HClO2↔ H+ + ClO2-

HClO2

HClO2↔ H+ + ClO2-

[ClO2-] [H3O+]

Ka = ------------------

[HClO2]

HClO2

HClO2↔ H+ + ClO2-

[ClO2-] [H3O+]

Ka = ------------------

[HClO2]

HNO2

HNO2

HNO2↔ H+ + NO2-

HNO2

HNO2↔ H+ + NO2-

[NO2-] [H3O+]

Ka = ------------------

[HNO2]

HNO2

HNO2↔ H+ + NO2-

[NO2-] [H3O+]

Ka = ------------------

[HNO2]

HIO

HIO

HIO↔ H+ + IO-

HIO

HIO↔ H+ + IO-

[IO-] [H3O+]

Ka = ------------------

[HIO]

HIO

HIO↔ H+ + IO-

[IO-] [H3O+]

Ka = ------------------

[HIO]

C6H13NH2

C6H13NH2

C6H13NH2 + H2O ↔ C6H13NH3+ + OH-

C6H13NH2

C6H13NH2 + H2O ↔ C6H13NH3+ + OH-

[C6H13NH3+ ] [OH-]

Kb = -------------------------

[C6H13NH2]

C6H13NH2

C6H13NH2 + H2O ↔ C6H13NH3+ + OH-

[C6H13NH3+ ] [OH-]

Kb = -------------------------

[C6H13NH2]

C3H7NH2

C3H7NH2

C3H7NH2 + H2O ↔ C3H7NH3+ + OH-

C3H7NH2

C3H7NH2 + H2O ↔ C3H7NH3+ + OH-

[C3H7NH3+ ] [OH-]

Kb = -------------------------

[C3H7NH2]

C3H7NH2

C3H7NH2 + H2O ↔ C3H7NH3+ + OH-

[C3H7NH3+ ] [OH-]

Kb = -------------------------

[C3H7NH2]

CO32-

CO32-

CO32- + H2O ↔ HCO3

- + OH-

CO32-

CO32- + H2O ↔ HCO3

- + OH-

[HCO3- ] [OH-]

Kb = -------------------------

[CO32-]

CO32-

CO32- + H2O ↔ HCO3

- + OH-

[HCO3- ] [OH-]

Kb = -------------------------

[CO32-]

HSO3-

HSO3-

HSO3-+ H2O ↔ H2SO3

+ OH-

HSO3-

HSO3-+ H2O ↔ H2SO3

+ OH-

[H2SO3 ] [OH-]

Kb = -------------------------

[HSO3-]

HSO3-

HSO3-+ H2O ↔ H2SO3

+ OH-

[H2SO3 ] [OH-]

Kb = -------------------------

[HSO3-]