1. Brønsted-Lowry Acid & Bases 10/01/2011 Vania and Michelle

2. Bronsted and Lowry explain acid and base based on their actions in a chemical reaction. Their theory is the development of Arrhenius theory.

3. ACID SUBSTANCE THAT CAN LOSE OR DONATE PROTON (the proton can be removed) ANYTHING THAT GIVES UP H+ IN A REACTION

4. BASE SUBSTANCE THAT HAS THE ABILITY TO GAIN OR ACCEPT PROTON (remove proton from an acid) ANYTHING THAT TAKES ON H+ IN A REACTION

5. In conclusion, there is only one requirement for an acid base reaction, which is: “ONE SUBSTANCE MUST PROVIDE A PROTON WHILE ANOTHER SUBSTANCE MUST RECEIVE THE SAME PROTON AT THE SAME TIME”

6. : Finally, we have a conjugate acid-base pair when two molecules are formed by the transfer of proton Conjugate base: the particle that remains when a proton is removed from the acid Conjugate acid: the product of a particle when it receives a proton from the acid

7. THEREFORE, a reaction must have an acid, a base, a conjugate acid and a conjugate base

8. TIME FOR EXERCISES!

9. Determine the acid, base, conjugate acid and conjugate base! HCl + H2O  H3O+ + Cl-

10. NH3 + H2SO4 NH4+ + HSO4-

11. HBr + NH2+  NH3 + Br-

12. RESOURCES en.wikipedia.org/wiki/Brønsted–Lowry_acid-base_theory www.chembuddy.com/?left=pH...bronsted-lowry-theory library.thinkquest.org/19957/acidbase/bronstedbody.html www.nyu.edu/classes/tuckerman/honors.chem/.../node3.html