CHEM 1001 Study Guide - Midterm Guide: Boltzmann Constant, Intensive And Extensive Properties, Electrochemistry
11 Jan 2018
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16. 4 strong acids and strong bases: dissociate completely (not reversible) Chapter 16: acids and bases: self-ionization water doesn"t contribute much to ph in presence of strong acid/base, unless extremely dilute. Remember ca(oh)2 [oh-] = 2 x [ca(oh)2: strong acids: hcl, hbr, hi, hclo4, hno3, h2so4 (only 1st ionization) not hf, strong bases: group 1 & 2 hydroxides. 16. 5 weak acids and weak bases pk = -logk: anything not in the strong acid list is weak acid. 16. 7 ions as acids and bases: ka x kb = kw (for conjugate acid-base pairs) and kw = 1. 0 x 10-14, conjugate of a weak is weak but stronger the acid, the weaker its conjug. Cation & anion from strong base + strong acid = 7 b/c don"t hydrolyze. Cation strong base, anion weak acid = > 7 (basic) Cation weak base, anion strong acid = < 7 (acidic) Weak base & weak acid depends on ka & kb values.
