lec15 - 2/9/2012 1 Announcements THE QUARTER IS HALF OVER...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2/9/2012 1 Announcements THE QUARTER IS HALF OVER !!! No class Monday Last Time LeChateliers principle n, P, and T BronstedLowry Acids and Bases Conjugate base A from HA Conjugate acid HB from B Autoprotolysis Water is amphiprotic 2H 2 O(l) H 3 O + (aq) + OH (aq) K c = Water concentration change is negligible K w = K c = 1x10 14 [H 3 O + ][OH ] [H 2 O] 2 [H 3 O + ][OH ] [H 2 O] 2 = Example What are the concentrations of H 3 O + and OH- in a 1.3 x 10 3 M aqueous solution of the strong acid HCl? 2/9/2012 2 Example What are the concentrations of H 3 O + and OH- in a 4.5 x 10 2 M aqueous solution of the strong base NaOH? Comparison of Examples HCl NaOH [H 3 O + ] 1.3 x 10 3 M 2.2 x 10 13 M [OH ] 7.7 x 10 12 M 4.5 x 10 2 M Changes of ~ 10 orders of magnitude The pH Scale Invented in a brewery better beer Logarithm base 10 scale pH = log[H 3 O + ] Autoprotolysis in H 2 O pH = 7 Acidic solutions low pH Basic solutions high pH 2/9/2012...
View Full Document

This note was uploaded on 03/18/2012 for the course CHEM 2B taught by Professor Clemens during the Winter '08 term at UC Davis.

Page1 / 4

lec15 - 2/9/2012 1 Announcements THE QUARTER IS HALF OVER...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online