Lecture 13, Acid Base Reactions


Acid Base Reactions

  1. Definition of an acid/base reaction
  2. Acid as proton donor (HCl)
    HCl (aq) -> H+(aq) + Cl-

    Base as OH donor (NaOH)
    NaOH(aq) -> Na+ + OH-

  3. HCl + NaOH
    Total Equation
    HCl(aq) + NaOH(aq) -> H2O(l) + NaCl(aq)

    Dissociation
    HCl (g) -> H+(aq) + Cl-(aq)
    NaOH -> Na+(aq) + OH-(aq)

    Neutralization (spectator ions)
    H3O+ + Cl- + Na+ + OH- -> 2 H2O + Na+ + Cl-

    Net Ionic Equation
    H3O+ + OH- 2 H2O

  4. Magnesium Hydroxide + Nitric Acid
    Balanced total equation
    Mg(OH)2 (aq) +2 HNO3(aq)-> 2 H2O +Mg(NO3)2 (aq)

    Total Ionic Equation
    Mg2+ + 2 OH1- + 2 H1+ + 2NO31- - > 2H2O + Mg2+ + 2 NO31-

    Net Ionic Equation
    2 OH1- + 2 H1+ -> 2H2O

  5. Sulfuric acid and lithium hydroxide
  6. Balanced total equation:
    H2SO4 (aq) + 2 LiOH (aq) -> 2 H2O + Li2SO4 (aq)

    Ionic Equation:
    2 H1+ (aq) + SO42- (aq) + 2 LI1+ (aq) + 2 OH1- -> 2 H2O + SO42- (aq) + 2 Li1+ (aq)

    Net ionic equation:
    2 H1+ (aq) + 2 OH1- -> 2 H2O


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Widener University
Chester, PA 19013

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