Use the Goal Seek spreadsheet at the end of the chapter to find the pH of 1.00 L of solution containing 0.030 mol HA (pKa 2.50) and 0.015 mol NaA. What would the pH be with the approximations [HA] 0.030 and [A] 0.015?
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Friday, October 14, 2016 Gen Chem II Notes Titrations A known concentration of base (or acid) is slowly added to a solution of acid (or base). Titration of a Strong Acid with a Strong Base pH= 7.00 ex) HCl + NaOH → H O + NaCl 2 From the start of the titration to near the equivalence point, pH goes up slowly. Just before and after the equivalence point, the pH increases rapidly. At the equivalence point, moles acid= moles base, and the solution contains only water Titration of a Weak Acid with a Strong Base ● Unlike in the previous case, the conjugate base of the acid affects the pH when it is formed. ● If you have a weak acid and you put in NaOH, at the equivalence point, why is the pH greater than 7 I t is because you added
Textbook: Quantitative Chemical Analysis
Author: Daniel C. Harris
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