Brønstedlowry acids and bases an acid is a proton

Info icon This preview shows pages 7–10. Sign up to view the full content.

View Full Document Right Arrow Icon
Brønsted–Lowry Acids and Bases An acid is a proton donor A base is a proton acceptor acid base H 2 O H 3 O HBr Br + + NH 3 H 2 O + NH 4 + OH acid base Note that water can act as an acid or a base
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
8 acid base H 2 O H 3 O HBr Br + + The remaining species after the proton has been donated is the conjugate base . conjugate acid conjugate base Every acid–base reaction involving proton transfer has two conjugate acid–base pairs. H Br Br + + O H H O H H H The resulting species after the proton has been accepted is the conjugate acid . Brønsted–Lowry Acids and Bases Lewis Acids and Bases A Lewis acid is an electron pair acceptor . (think empty orbital) (think filled orbital) A Lewis base is an electron pair donor .
Image of page 8
9 Lewis Acids and Bases + O H H H O H H H Lewis acid Lewis base Adduct Electron deficient Electron rich New covalent bond Lewis Acids and Bases B F F F CH 3 CH 2 O CH 2 CH 3 + B F F F O CH 2 CH 3 CH 2 CH 3 Lewis acid Lewis base Adduct Electron deficient Electron rich New covalent bond Lewis acids don t have to donate a proton, as long as they can accept a share in an electron pair. High energy HOMO Low energy LUMO What is the hybridization of the boron in BF 3 ? A: sp B: sp 2 C: sp 3 D: sp 4 E: sp 5
Image of page 9

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
10 Acids and Bases Brønsted: H A + B A - + HB (proton donation) molecule pK a HCl -7.0 HF 3.2 Acetic acid 4.76 H 2 O 15.7 HC CH 25 NH 3 35 CH 4 60 Measure of acidity
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern