CHEM 1AA3 Study Guide - Final Guide: Sodium Benzoate, Benzoic Acid, Pi Bond

356 views18 pages
19 Mar 2013
Department
Course
Professor

Document Summary

Chem 1aa3 exam review - good luck on the exam! Note: a lot of the questions on these practice exams are recycled in practice tests for test 1 and 2 somewhere you can find full solutions for a good number of them. Is the exam in the same room as where we write. Yes, its in bsb 147 @ 6 pm today! 2011 exam: b - a buffer must have limiting strong (acid/base) with excess weak (acid/base) Hmm i got a - i got a too! Well, since they give you the ka for benzoate, i assumed it was a buffer system (so buffer equation) with benzoate. So go through each of the reactants, they"re either going to increase or decrease the moles conjugate base or acid. pka. +log[(moles benzoate - moles hcl +moles naoh + moles nabr)/(moles benzoate. + moles hcl - moles naoh - moles nabr)].