Today’s Objective : - SWBAT explain how a buffer works. SWBAT design an appropriate buffer system

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# Today’s Objective : - SWBAT explain how a buffer works. SWBAT design an appropriate buffer system - PowerPoint PPT Presentation

Catalyst: Tuesday February 11, 2014. Welcome!. Today’s Objective : - SWBAT explain how a buffer works. SWBAT design an appropriate buffer system. Announcements. Midterm Exam: Friday Will cover everything from this semester: Unit 9: Kinetics Unit 10: Equilibrium Unit 11: Acids/Bases.

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## Today’s Objective : - SWBAT explain how a buffer works. SWBAT design an appropriate buffer system

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Presentation Transcript

Catalyst: Tuesday February 11, 2014

Welcome!

### Today’s Objective: -SWBAT explain how a buffer works. SWBAT design an appropriate buffer system

Announcements
• Midterm Exam: Friday
• Will cover everything from this semester:
• Unit 9: Kinetics
• Unit 10: Equilibrium
• Unit 11: Acids/Bases
Lecture
• Ksp = solubility product
• Equilibrium between rate of dissolving and precipitation
Quicket
• The solubility of silver bromide, AgBr, is found to be 8.8 x 10-7 M. Calculate the Ksp.
Drill
• Students have 3 minutes to complete drill problems
Quicket
• Which salt would you expect to be more soluble in water?

A) CaCO3 (Ksp = 2.8 x 10-9)

B) BeCO3 (Ksp = 8.1 x 10-12)

C) BaCO3 (Ksp = 7.5 x 10-7)

D) MgCO3 (Ksp = 1.4 x 10-13)

Quicket
• Which salt would you expect to be more soluble in water?

A) CaCO3 (Ksp = 2.8 x 10-9)

B) Li2CO3 (Ksp = 8.1 x 10-12)

C) Na2CO3 (Ksp = 7.5 x 10-7)

D) MgCO3 (Ksp = 1.4 x 10-13)

Work Time
• Problem Set