Relative Acidity Etc

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bnpusey
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239543
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Relative Acidity Etc
Updated:
2013-10-08 16:01:26
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Organic Chem Acidity Chemistry
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Which is more?
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  1. What does electronegativity have to do with acidity?
    Electronegativity.  When comparing atoms within the same row of the periodic table, the more electronegative the anionic atom in the conjugate base, the better it is at accepting the negative charge
  2. What does size have to do with acidity?
    Size.  When comparing atoms within the same group of the periodic table, the easier it is for the conjugate base to accommodate negative charge (lower charge density). The size of the group also weakens the bond H-X (note this trend should be applied with care since it only works within a group).
  3. What does resonance have to do with Acidity?
    Resonance.  In the carboxylate ion, RCO2- the negative charge is delocalised across 2 electronegative oxygen atoms which makes it more stable than being localised on a specific atom as in the alkoxide, RO-
  4. Which is a stronger Acid?
    1) Phenol
    2) Carboxcylic Acid
    2) Carboxylic Acid
  5. Which is a stronger Acid?
    1) Carboxcylic Acid
    2) Alcohol
    1) Carboxcylic Acid
  6. Which is a stronger acid?
    Amine
    Carboxcyclic Acid
    Carboxcylic Acid
  7. Which is a stronger Acid?
    Carboxcylic Acid 
    Alkane
    Carboxcylic Acid
  8. Which is a stronger acid?
    Alkane
    Phenol
    Phenol
  9. Which is a stronger Acid?
    Phenol
    Alcohol
    Phenol
  10. Which is a Stronger Acid
    Amine
    Phenol
    Phenol
  11. Which is a stronger Acid?
    Alcohol
    Alkane
    Alchol
  12. Which is a stronger acid?
    Amine
    Alcohol
    Alcohol
  13. Which is a stronger Acid?
    Alkane
    Amine
    Amine
  14. Which is a stronger Acid?
    Organic
    Inorganic
    Inorganic
  15. Which is a stronger Acid?
    Sulfonic Acid (RSO3H)
    Carboxcylic Acid
    Sulfonic Acid
  16. Which is a stronger Acid?
    Alkane
    Alkene
    Alkene
  17. Which is a stronger Acid?
    Alkyne
    Alkene
    Alkyne
  18. Which is a stronger Acid?
    Amine
    Alkene
    Amine
  19. Which is a stronger Acid?
    Amine 
    H-H
    H-H
  20. Which is a stronger acid?
    Alkyne
    Amine
    Alkyne
  21. Which is a stronger acid
    Alkyne
    H-H
    Alkyne
  22. Which is a stronger Acid?
    Alcohol
    Alkyne
    Alcohol
  23. Which is a stronger acid
    Alcohol
    Water
    Water
  24. Which is a stronger acid?
    Water
    Positive Nitrogen (NH4+)
    Positive Nitrogen
  25. Which is a stronger Acid
    NH4
    Phenol
    NH4
  26. Which is a stronger Acid:
    NH4
    Carboxcylic Acid
    Carboxcylic Acid
  27. Which is a stronger acid?
    OH3
    X-H
    X-H
  28. Which is a stronger acid
    H-X
    H2SO4
    H2SO4
  29. Which is a stronger Acid
    Carboxcylic Acid
    F3C-COOH
    • F3C-COOH
    • Carboxcylic Acid with electronegative groups
  30. Which is a stronger acid?
    NH3
    NH4
    • NH4
    • Has a positive charge on the nitrogen
  31. Which is the stronger acid?
    HO
    H2O
    H3O
    HO < H2O < H3O

    Increasing positive charge increases acidity
  32. Which is the stronger Acid?
    NH3
    NH2
    NH4
    NH2 < NH3 < NH4

    Increasing positive charge increases acidity
  33. Which is the stronger Acid?
    CH4
    H2O
    HF
    NH3
    Methyl < Amine < Water < HF

    Across the periodic table acidity increases with electronegativity
  34. Which is the stronger acid?
    HCl
    HI
    HF
    HBr
    HF < HCl < HBr < HI

    Dow the periodic table acidity increases with size.
  35. Which is the stronger acid?
    Methanol
    Methanoic Acid
    Phenol
    Methanol < Phenol < Carboxcylic Acid

    Stabilized through increasing resonance
  36. Which is the stronger acid?
    a)
    b) 
    c) 
    C < A < B

    Inductive effects of Br closer to OH
  37. Which is the stronger acid?
    a) Alkyne
    b) Alkane
    c) Benzene
    b < c < a

    sp3 < sp2 < sp

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