Flashcards
Acids, Bases, and pH
Cards in this deck (18)
- 1Bronsted-lowry model emphasisesProton transfer
- 2Bronsted-lowry acidProton donor
- 3Bronsted-lowry baseproton acceptor
- 4Conjugate acid-base pairs for HCl and WaterHCl + H2O <-> H3O+ + Cl-
Acid 1 Base 2 Acid 2 Base 1 - 5Spectator ions areIons that don't participate in reaction
- 6Express pH to ___ dp2
- 7pH = [H+(aq)] =pH = -log[H+(aq)]
[H+(aq)] = 10^-pH - 8[H+(aq)] of strong acid[H+(aq)] = [HA(aq)]
Totally dissociates - 9Ka =Ka = [H+(aq)]*[A-(aq)]
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[HA(aq)] - 10Larger the Ka value =Stronger the acid, more it dissociates
- 11pKA = Ka =pKa = -logKa
Ka=10^-pKa - 12Weak acid approximations (2)1. H+ dissociation from H2O is negligible:
[H+(aq)] = [A-(aq)]
2. H+ dissociation from weak acids is tiny so
[HA(aq)]start = [HA(aq)]eq - 13Ka for weak acidsKa = [H+(aq)]^2 / [HA(aq)]
- 14When do approximations fail?When Ka > 10^-2 moldm-3
- 15Kw1.00*10^-14 mol-2 dm6
- 16Formula for KwKw =
[H2O] = [OH-(aq)][H+(aq)] - 17What to keep in mind when dealing with di/tribasic acids/bases?[OH-(aq)] x 2/3
[H+(aq)] x 2/3 - 18% dissociation of acid[H+(aq)] * 100 / [HA(aq)]
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- User has deleted their subject information Flashcards on Acids, Bases, and pH, created by Deleted user on 05/05/2018.
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- Created by I Shouldn't be awake · May 5, 2018
- Copied by I Shouldn't be awake · May 5, 2018
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