March 1st - Taste: sour React with active metals to produce...

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March 1 st , 2010 NaOH + HCl H2O + NaCl NaCl is a neutral solution, ph = 7.0 at 25 degrees C , if mixed at perfect stoichiometric ratio. If you mix anything other than 1:1, you will have leftovers. The excess moles sets the pH. Salt of a weak acid? How do you make this? Weak acid (HA) + Strong base (NaOH) H2O + NaA C6H5COOH [benzoic acid] --------------- H2O + NaC6H6COO(s) [sodium benzoate] -- dissolve in water / calc pH [Na][no strength]+ + A- + H2O HA + OH- -x x x Kw / Ka = Acid vs Base Acid
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Unformatted text preview: Taste: sour React with active metals to produce H2 Base Taste: bitter Feel slippery Special Indicator, changes at pH = 7 : Litmus Relative strengths of acids The bigger the Ka, the stronger the acid. [Conjugate base will be the weakest] HF <<< HCl < HBr < HI Acid strength------------------------------------ strongesgt. The covalent bold holding the acidic proton is inversely proportional to the acid strength. Oxyacid HClO Least Acid HClO2 HClO3 strongest acid Electron withdrawing group Element- check EN Alcohol...
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This note was uploaded on 11/18/2010 for the course CH 302 taught by Professor Holcombe during the Spring '07 term at University of Texas.

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March 1st - Taste: sour React with active metals to produce...

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