1 / 16

Chapter 15 Lewis Acids and Bases

Tro, Chemistry: A Molecular Approach. 2. Arrhenius Theory. HCl ionizes in water,producing H and Cl ions. NaOH dissociates in water,producing Na and OH ions. Tro, Chemistry: A Molecular Approach. 3. Brnsted-Lowry Theory. acid is H donor, base is H acceptorHA :B ? :A HB . Tro, Chemis

viveka
Download Presentation

Chapter 15 Lewis Acids and Bases

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


    1. Chapter 15 Lewis Acids and Bases

    2. Tro, Chemistry: A Molecular Approach 2 Arrhenius Theory

    3. Tro, Chemistry: A Molecular Approach 3 Brnsted-Lowry Theory acid is H donor, base is H acceptor HA + :B ? :A + HB+

    4. Tro, Chemistry: A Molecular Approach 4 Lewis Acid - Base Theory electron sharing electron donor = Lewis Base = nucleophile must have a lone pair of electrons electron acceptor = Lewis Acid = electrophile electron deficient

    5. Tro, Chemistry: A Molecular Approach 5 Lewis Acid - Base Theory when Lewis Base gives electrons from lone pair to Lewis Acid, a covalent bond forms between the molecules Nucleophile: + Electrophile ? Nucleophile:Electrophile product called an adduct

    6. Tro, Chemistry: A Molecular Approach 6 Lewis Acid - Base Reactions

    7. Tro, Chemistry: A Molecular Approach 7 Lewis Acid - Base Reactions

    8. Tro, Chemistry: A Molecular Approach 8 Practice - Complete the Following Lewis Acid-Base Reactions Label the Nucleophile and Electrophile BF3 + HF ? CaO + SO3 ? KI + I2 ?

    9. Tro, Chemistry: A Molecular Approach 9 Practice - Complete the Following Lewis Acid-Base Reactions Label the Nucleophile and Electrophile BF3 + HF ? H+1BF4-1 CaO + SO3 ? Ca+2SO4-2 KI + I2 ? KI3

    10. Tro, Chemistry: A Molecular Approach 10 Lewis Acid - Base Theory other acid-base reactions also Lewis

    11. Tro, Chemistry: A Molecular Approach 11 Lewis Acid - Base Theory

    12. Tro, Chemistry: A Molecular Approach 12 Strengths of Binary Acids

    13. Tro, Chemistry: A Molecular Approach 13 Strengths of Binary Acids the more d+ H-X d- polarized the bond, the more acidic the bond the stronger the H-X bond, the weaker the acid binary acid strength increases to the right across a period H-C < H-N < H-O < H-F binary acid strength increases down the column H-F < H-Cl < H-Br < H-I

    14. Tro, Chemistry: A Molecular Approach 14 Oxyacids, H-O-Y

    15. Tro, Chemistry: A Molecular Approach 15 Strengths of Oxyacids, H-O-Y the more electronegative the Y atom, the stronger the acid helps weakens the H-O bond the more oxygens attached to Y, the stronger the acid further weakens and polarizes the H-O bond

    16. Tro, Chemistry: A Molecular Approach 16 Strengths of Oxyacids, H-O-Y

More Related