Chapter 16.7, pp 524-527
Do
Problem 44, pg 534, and the titration problem below:
PowerPoint for Fishy#1You have a large flask full of NaOH, which you’d like to use for titrant. You think it’s close to .1 M, but you’re not really sure. Fortunately, you have a small amount of pure benzoic acid, so you plan to do a titration. You weigh a small, precise amount of this monoprotic acid into a flask, and dissolve it in approximately 20 mL of distilled water.
Here’s what you need to know:
What is the molarity of NaOH? (precise)
- molar mass of benzoic acid: 122.12 g/mol
- mass of benzoic acid: 0.230 g
- mL of NaOH titrated: 18.55 mL
Tomorrow
- Fishy Quiz #2
- Quickie 10-point pH/pOH calculation quiz
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