Acids Lesson 14 Amphiprotic Ions Acids or Bases?

Acids Lesson 14 Amphiprotic Ions Acids or Bases?

Acids Lesson 14 Amphiprotic Ions Acids or Bases? Kwantlen Science Challenge: Kwantlen Science Challenge: Kwantlen Science Challenge: Amphiprotic Ions H3PO4 H2PO4HPO42PO43- Acid Amphiprotic Amphiprotic Base Amphiprotic ions have a Ka and a Kb. If the Ka > Kb, then the ion is an acid in water. If the Kb > Ka, then the ion is a base in water.

Is H2PO4- acid or basic acid 1. Is H2PO4- an acid or base when in water? Write the predominate hydrolysis equation for this ion. Ka (H2PO4-) = 6.2 x 10-8 Kb (H2PO4-) = Kw Ka(H3PO4) = 1 x 10-14 7.5 x 10-3

= 1.3 x 10-12 Ka > Kb Acid H2PO4- H2 O + HPO42 + H3 O+ Is HPO42- acid or basic basic 2.

Is HPO42- an acid or base when in water? Write the hydrolysis equation for this ion. Ka (HPO42-) = 2.2 x 10-13 Kb (HPO42-) = Kw Ka(H2PO4-) = 1 x 10-14 6.2 x 10-8 = 1.6 x 10-7 Kb > Ka HPO42-

+ base H2 O H2PO4- + OH- 3. Show by calculation if NH4F is an acid or base when in water. NH4F NH4+ + acid Both have weak parents- neither will cross off! What will the salt be?

Ka(NH4+) Kb (F-) = = = = = 5.6 x 10-10 Kw Ka(HF) 1 x 10-14 3.5 x 10-4 2.9 x 10-11 Ka > Kb acid Fbase 4. Show by calculation if NH4CH3COO is an acid or base when in water. NH4CH3COO

NH4+ acid + Ka(NH4+) = 5.6 x 10-10 Kb (CH3COO-) = = Kw Ka(CH3COOH) = 1 x 10-14 1.8 x 10-5 = 5.6 x 10-10

Ka = Kb CH3COObase neutral pH = 7.00 5. Calculate the volume of 0.100 M H2CO3 required to neutralize 25.0 mL of 0.200 M KOH. 1H2CO3 ?L 0.100 M + 2KOH 0.0250 L 0.200 M K2CO3 + 2HOH 5. Calculate the volume of 0.100 M H2CO3 required to neutralize 25.0 mL of 0.200 M KOH. 1H2CO3

?L 0.100 M 0.0250 L KOH + 2KOH 0.0250 L 0.200 M K2CO3 + 2HOH 5. Calculate the volume of 0.100 M H2CO3 required to neutralize 25.0 mL of 0.200 M KOH. 1H2CO3 ?L 0.100 M + 0.0250 L KOH x 0.200 mol L 2KOH 0.0250 L

0.200 M K2CO3 + 2HOH 5. Calculate the volume of 0.100 M H2CO3 required to neutralize 25.0 mL of 0.200 M KOH. 1H2CO3 ?L 0.100 M + 2KOH 0.0250 L 0.200 M K2CO3 + 2HOH 0.0250 L KOH x 0.200 mol x 1 mole H2CO3 L 2 mole KOH 5. Calculate the volume of 0.100 M H2CO3 required to neutralize 25.0 mL of 0.200 M KOH.

1H2CO3 ?L 0.100 M + 2KOH 0.0250 L 0.200 M K2CO3 + 2HOH 0.0250 L KOH x 0.200 mol x 1 mole H2CO3 x 1 L L 2 mole KOH 0.100 mol 5. Calculate the volume of 0.100 M H2CO3 required to neutralize 25.0 mL of 0.200 M KOH. 1H2CO3 ?L 0.100 M +

2KOH 0.0250 L 0.200 M K2CO3 + 2HOH 0.0250 L KOH x 0.200 mol x 1 mole H2CO3 x 1 L = 0.0250 L L 2 mole KOH 0.100 mol 6. Label the equation that has a Ka, Kb, Ksp, Kw, or Keq. Mg(OH)2(s) Mg2+ + CN- + H2O

HCN + OH- NH4+ + H2O H3O+ + NH3 N2O4(g) 2NO2(g) 2H2O H3O+ +

OH- 2OH- 6. Label the equation that has a Ka, Kb, Ksp, Kw, or Keq. Ksp Mg(OH)2(s) Mg2+ + CN- + H2O HCN + OH-

NH4+ + H2O H3O+ + NH3 N2O4(g) 2NO2(g) 2H2O H3O+ + OH- 2OH- 6.

Label the equation that has a Ka, Kb, Ksp, Kw, or Keq. Ksp Mg(OH)2(s) Mg2+ + Kb CN- + H2O HCN + OH- NH4+ +

H2O H3O+ + NH3 N2O4(g) 2NO2(g) 2H2O H3O+ + OH- 2OH- 6. Label the equation that has a Ka, Kb, Ksp, Kw, or Keq. Ksp

Mg(OH)2(s) Mg2+ + Kb CN- + H2O HCN + OH- Ka NH4+ + H2O

H3O+ + NH3 N2O4(g) 2NO2(g) 2H2O H3O+ + OH- 2OH- 6. Label the equation that has a Ka, Kb, Ksp, Kw, or Keq. Ksp

Mg(OH)2(s) Mg2+ + Kb CN- + H2O HCN + OH- Ka NH4+ + H2O

H3O+ + NH3 Keq N2O4(g) 2NO2(g) 2H2O H3O+ + OH- 2OH- 6. Label the equation that has a Ka, Kb, Ksp, Kw, or Keq. Ksp

Mg(OH)2(s) Mg2+ + Kb CN- + H2O HCN + OH- Ka NH4+ + H2O

H3O+ + NH3 Keq N2O4(g) 2NO2(g) Kw 2H2O H3O+ + OH- 2OH-

Recently Viewed Presentations

  • Sedimentologi Kamal Roslan Mohamed DELTA INTRODUCTION The mouths

    Sedimentologi Kamal Roslan Mohamed DELTA INTRODUCTION The mouths

    A delta building out into a region with strong tides will be modified into a pattern that is different to both river- and wave- dominated deltas. The delta-top channel(s) are subject to tidal influence with reverses of flow and/or periods...
  •  :  V  .-81 :  ..  1979   Jarvik-7. 1982

    : V .-81 : .. 1979 Jarvik-7. 1982

    Він опублікував дві книги про своє життя з імплантованим штучним серцем і прочитав безліч лекцій в різних країнах. Штучне серце AbioCor розроблено американською фірмою Abiomed Incorporated.
  • Functions of the circulatory system: Distribute nutrients, Transport

    Functions of the circulatory system: Distribute nutrients, Transport

    * Arteri Capillaries Veins Heart The Circulatory System Vessel Histology Arteries and veins are composed of 3 layers or tunics tunica interna tunica media tunica externa Capillaries are composed of a single tunic tunica interna Tunics 1.
  • Moving Forward Planning for 2008 - 2009 Dr.

    Moving Forward Planning for 2008 - 2009 Dr.

    UBC-University of British Columbia. UILL-University of Illinois. UFRGS-Federal University of the Rio Grande Do Sul. UPENN-University of Pennsylvania. Wellesley-Wellesley College. WITS-University of Witwatersrand. Yonsei-Yonsei University Medical School. Inorganic Iron Compounds as TB Agents UFRGS . Enoyl-ACP-Reductase (InhA) Inhibitors
  • Geography and Agriculture: Von Thunen's Model

    Geography and Agriculture: Von Thunen's Model

    Von Thunen's Model was created to make an efficient system of land use based on four rings. The system was based on four rings based around the market or city and focused on how to keep farmed goods fresh and...
  • AASHTOWare Bridge Rating Curved Girder Module Vanessa Storlie,

    AASHTOWare Bridge Rating Curved Girder Module Vanessa Storlie,

    Modeling - Structure Framing Plan Details. The "Structure Framing Plan Details" window has additional input for the curved girders. The default bearing alignment is required as well as the distance from the superstructure reference line to the leftmost girder. Table...
  • SOU Internal Auditing By Ryan Schnobrich, CPA, CIA

    SOU Internal Auditing By Ryan Schnobrich, CPA, CIA

    Develop an annual internal audit plan using an appropriate risk-based methodology and including the consideration of any risks or control concerns identified by management and submit the plan along with a financial budget, human resource plan and any resource limitations...
  • Writing Chunks - calhoun.k12.al.us

    Writing Chunks - calhoun.k12.al.us

    Writing Chunks A chunk is the grouping of a concrete detail with two or more sentences of commentary that help to connect the concrete detail to the topic sentence of a body paragraph. Concrete detail=CD Commentary=CM A body paragraph should...