1 / 20

Catalyst

Catalyst. 1. What is the equilibrium point? 2. What exactly does equilibrium mean? 3. Can you find a situation in your body where this exists ? 4. Grade yourselves in your learning logs for all LT’s. End. Lecture 6.6 – Intro to Buffers. Today’s Learning Target.

gail
Download Presentation

Catalyst

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. Catalyst 1. What is the equilibrium point? 2. What exactly does equilibrium mean? 3. Can you find a situation in your body where this exists? 4. Grade yourselves in your learning logs for all LT’s End

  2. Lecture 6.6 – Intro to Buffers

  3. Today’s Learning Target • 6.8 – I can identify the conjugate acid and base in a chemical reaction. • 6.9 – I can explain what a buffer is, draw a titration curve for a buffered solution, and explain why these are essential to maintaining life in humans.

  4. What are conjugate acids and bases?

  5. I. Conjugate Acids and Bases • Conjugate Base– The compound that remains after a Bronsted-Lowry acid has given off its H+. • Conjugate Acid– The compound that is formed when a Bronsted-Lowry base gains a H+. HA + B  A- + BH+

  6. Class Example • Identify the acid, base, conjugate acid, and conjugate base: HBr + NaOH  H2O + NaBr

  7. Table Talk • Identify the acid, base, conjugate acid, and conjugate base: H2SO4 + KOH  KHSO4 + H2O

  8. Stop and Jot • Identify the acid, base, conjugate acid, and conjugate base: HI + NH3 NH4+ + I-

  9. What is equilibrium?

  10. I. Weak Acid and Base Equilibrium • Weak acids and bases do not completely dissociate. • This means that they exist in equilibrium • There are both reactant and products present in a solution of weak acid or base.

  11. Equilibrium

  12. SUMMARIZE

  13. Learning Log Assessment • Rate yourself 1 – 4 on LTs 6.8 and 6.9

  14. Which Card? • Raise your table’s card in the air for the category that you think each compound belongs to. • Your choices are: • Bronsted – Lowry Acid • Bronsted – Lowry Base • Arrhenius Acid • Arrhenius Base • Conjugate Acid • Conjugate Base

  15. Which Card? • You run the following reaction: HCOOH + OH- COOH- + H2O 1. What is OH-? 2. What is HCOOH? 3. What is COOH- 4. What is H2O?

  16. Which Card? • You run the following reaction: NH3 + HBr NH4+ + Br- 1. What is NH3? 2. What is HBr? 3. What is NH4+? 4. What is Br-?

  17. Which Card? • You run the following reaction: HF + LiOH LiF + H2O 1. What is LiOH? 2. What is HF? 3. What is LiF? 4. What is H2O?

  18. Review Stations • Station 1 – LT 6.1 • Station 2 – LT 6.2 • Station 3 – LT 6.3 • Station 4 – LT 6.4 • Station 5 – Calculating logs • Station 6 – LT 6.5 • Station 7 – LT 6.6 • Station 8 – LT 6.6 • Rotate between the 8 stations (9 for honors) • Honors Station 9 – LT 6.8 and 6.9 ROTATE!

  19. Closing Time • Test on Friday • Rough Draft of Lab Report due Tuesday

More Related