SCH4U Unit #2: EQUILIBRIUM

1 / 34

# SCH4U Unit #2: EQUILIBRIUM - PowerPoint PPT Presentation

SCH4U Unit #2: EQUILIBRIUM . Ms. Cornacchione Wed Mar 19 th 2014. AGENDA. Test 3 – Equilibrium Part 1 Continue with Acid-Base Equilibrium Notes and Examples. Unit #2: Acid/Base Equilibrium TOPICS. Bronsted Lowry Acids &amp; Bases (8.1) Strong and Weak Acids &amp; Bases (8.2)

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about 'SCH4U Unit #2: EQUILIBRIUM' - eavan

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

### SCH4UUnit #2: EQUILIBRIUM

Ms. Cornacchione

Wed Mar 19th 2014

AGENDA
• Test 3 – Equilibrium Part 1
• Continue with Acid-Base Equilibrium Notes and Examples
Unit #2: Acid/Base EquilibriumTOPICS
• Bronsted Lowry Acids & Bases (8.1)
• Strong and Weak Acids & Bases (8.2)
• Acid Calculations (8.4)
• Base Calculations
• Acid-Base Properties of Salts
• Acid-Base Titration
• Buffer Systems
Acid Calculations
• Strong acids (ionize completely)
• Can assume [H+] = [HA(aq)] to calculate pH
• Weak acids (ionize partially)
• Must consider EQM (Initial, Change, and EQM Concs) and Ka, to calculate pH
• Percent Ionization – percentage of solute that ionizes when it dissolves in a solvent
EXAMPLES – Calc pH from Ka

(TIP: Use an ICE Table)

Polyprotic Acids

Monoprotic acids – possesses only one ionizable (acidic) hydrogen atom (eg. HCl(aq))

Polyprotic acids – possesses more than one ionizable (acidic) hydrogen atom (eg. H2SO4(aq))

H2A ⇌ H+ + HA- Ka1= [H+][HA-]

[H2A]

HA-⇌ H+ + A- Ka2 = [H+ ][A-]

[HA- ]

Practice Makes Perfect!!
• Page 525 Q#1-9
• Complete the “Acid-Base EQM” Worksheet
Unit #2: Acid/Base EquilibriumTOPICS
• Bronsted Lowry Acids & Bases (8.1)
• Strong and Weak Acids & Bases (8.2)
• Acid Calculations (8.4)
• Base Calculations (8.5)
• Acid-Base Properties of Salts
• Acid-Base Titration
• Buffer Systems
Base Calculations
• Strong bases (ionize completely)

pH + pOH = 14

• Weak bases (ionize partially)
• Must consider EQM and Kb, to calculate pOH
Unit #2: Acid/Base EquilibriumTOPICS
• Bronsted Lowry Acids & Bases
• Strong and Weak Acids & Bases
• Acid Calculations
• Base Calculations
• Acid-Base Properties of Salts
• Acid-Base Titration
• Buffer Systems
Acid-Base Properties of Salt Solutions
• Many salts are highly soluble in water and easily dissociate into ions that may or may not change the pH of the solution (acidic, basic, or neutral)
• We must consider how well each ion acts as an acid or a base (the stronger one wins!)
Practice Makes Perfect
• Complete all Section 8.6 Practice Problems
• Do Page 539 Q#2-5