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Unformatted text preview: Mixed operations: Exponents and logarithms y = x a y = log x y = ln x y = 10 x y = e x The real rule for significant figure: Example 1: The function pH = log [H + ], where [H + ] is the molarity of H + . For pH = 5.21 0.03, find H + and its uncertainty. Example 2: Tom and Jerry prepared a standard HCl solution for pH titration experiments in CHM 3120L. They took 1 mL of 37.0 0.1 % (wt) HCl solution using a buret with a reading error of 0.02 mL. Then they put e Cl a 1 volumetric flask and added distilled water up to the the HCl in a 1L volumetric flask and added distilled water up to the mark of 1L with a reading error of 2 mL. (1) Please calculate the molarity of H + in the resulting solution and its uncertainty; and ) calculate the pH of the resulting solution and its uncertainty (2) calculate the pH of the resulting solution and its uncertainty. Homework: 33, 37; 312; 316; and 321...
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 Spring '08
 Harrison
 Analytical Chemistry

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