CH31 – The Struggle

Dates

• P4 – Wednesday, March 28th
• P5 – Wednesday, March 28th
• P7 – Thursday, March 29th

Homework Recap

• Titration curve
• thoughts and observations?
• where is the equivalence point?
• phenolphthalein – how does it work? [LINK]

Quick Exercise

• what is the volume of one drop?
• Buret: Initial = 2.14 mL, Final = 4.54 mL, drops = 49
• take a look here [LINK]
• how many drops caused the jump?
• what percentage of the measurement is this?

New Idea – Standardization

• know “roughly” one solution
• titrate with another
• why is this useful?

Virtual Lab

• Homework –> Acids and Bases –> Prelab Exercises
• Problem 1
• what is KHP?
• conduct the lab using glassware you know

Homework

• Finish Problem 1
• record data and do calcs as if performing a lab

Note: Next Week

• SB + LB
• “Test” will be 2nd half of LB
• P4 = Wed, P5, = Thu, P7 = Fri