University College - Chemistry Chem 112A Lecture Notes - Lecture 8: Nitrite, Without Loss Of Generality, Ph
13 Dec 2016
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Equation of the day: =(cid:3028)(cid:3029: water and ph (aq) + a- (aq), with ka (aq) + ha(aq), with kb (aq) + oh- (aq, autoionization of water and ph. Weak base ionization: a: for a weak acid, water is a br nstead base. Generally an acidic solution has ph < 7, and a basic solution has ph > 7 (from clicker) for an endothermic reaction, k increases with increasing temperature. Strong acid equilibrium: hi + h2o h3o+ + i-, ka is infinitely large. Conjugate base equilibrium: i- + h2o oh- + hi, kb is infinitely small: limiting case with the conjugate see-saw: strong acids and bases. I- in solution will be neutral and not basic. Kb = kw/ka = 2. 86 x 10 -11 (aq), ka = 3. 50 x 10-4 (aq) + hf(aq), kb = 2. 86 x 10-11. Acid/base and ph: calculating ph of weak acid in water, nitrous acid: hno2 + h2o h3o+ + no2.
