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Unformatted text preview: dis favored (has a really tiny equilibrium constant) we would not predict a reaction. 3. What is the pH of a 0.0053 mol/L solution of sodium hydrogen sulfate in water at 25 C? [10 marks] 4. What is the pH of a 0.0053 mol/L solution of sulfuric acid in water at 25 C? [10 marks] 5. The protonated aniline cation (C 6 H 5 NH 3 ) is a monoprotic acid (analogous to ammonium) with a p K a of 4.6. This acid is normally made by reacting aniline (C 6 H 5 NH 2 ) with a strong acid. You are given 1 L of a 0.2 mol/L a aniline solution. You want to make a pH 5 buffer by adding 5 mol/L HCl solution. First though, you need to make up the HCl solution so you want to know roughly how much you will need. Calculate the approximate volume of HCl solution needed. [10 marks]...
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- Fall '06