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Quick Quiz. What are the 6 strong acids?? What are the 6 strong bases??. Give the conjugate acids of the following:. HCO 3 - NH 3 OH - SO 4 -2. Give the conjugate bases of the following:. HCO 3 - NH 3 HSO 4 - H 3 PO 4 H 2 O. Define. A Lewis Base A Bronsted Lowry acid

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Quick Quiz

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Quick quiz

Quick Quiz

  • What are the 6 strong acids??

  • What are the 6 strong bases??


Give the conjugate acids of the following

Give the conjugate acids of the following:

  • HCO3-

  • NH3

  • OH-

  • SO4-2


Give the conjugate bases of the following

Give the conjugate bases of the following:

  • HCO3-

  • NH3

  • HSO4-

  • H3PO4

  • H2O


Define

Define

  • A Lewis Base

  • A Bronsted Lowry acid

  • An Arrhenius Acid


15 4 relative strengths 659

15.4 Relative Strengths (659)

  • Table 15.2 p660 compares relative strengths of acids and bases.

  • A reaction normally goes in the direction of the weaker acid & base.

  • The strongest acids have the weakest conjugate bases and vice versa.


Predict the direction of the reaction based on the table 15 2 661

Predict the direction of the reaction based on the Table 15.2: (661)

  • SO4-2 + HCN  HSO4- + CN-

  • H2S + C2H3O2- HC2H3O2 + HS-


15 5 factors affecting acid strength 662

15.5 Factors affecting acid strength (662):


Polarity

Polarity

  • The more polar bonds allow protons to be removed easier increasing the acid strength.

  • Across a period electronegatives increase, increasing the polarity and acid strength.

  • H2O<HF


Bond strength

Bond strength

  • The larger the atom is which H is bonded to, the weaker the bond and thus a stronger acid.

  • Down a family the radius increases, decreasing the bond strength and increasing the acid strength.

  • HF<HCl<HBr<HI


Oxoacids h o y

Oxoacids: H – O – Y

  • For a series of oxoacids of the same structure, differing only in the atom Y, the acid strength increases with the electronegativity of Y.

  • HIO<HBrO<HClO


Multiple oxygen atoms

Multiple oxygen atoms

  • For a series of oxoacids, (HO)mYOn, the acid strength increases with n. The more O’s the stronger the acid.

    • HClO< HClO2< HClO3< HClO4


Polyprotic acids

Polyprotic Acids

  • Strength decreases as protons are lost.

  • HPO4-2 < H2PO4- < H3PO4


Homework ok kt

HOMEWORK – OK KT?

Read 15.4 - 5 p.676 Q 35- 42 odds


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