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Unformatted text preview: 5. A 0.08 M CH 3 NH 2 solution is titrated against a 0.08 M HCl solution. Assuming the K b of CH 3 NH 2 is 4x1010 , what is the pH at the equivalence point? 1. 3 2. 7 3. 9 4. 5 5. not enough information 6. If 100 ml of 0.2 M HClO 3 is titrated to a pH of 7 with 0.4 M LiOH, what is the overall volume of the solution at the endpoint? 1. 50 ml 2. 150 ml 3. 1.5 4. Not enough information is provided 7. A student erroneously calculated that a solution consisting solely of a weak base dissolved in water had a pH of 6. Which two of the following might have been true? I. K b < 1011 II. K b > 103 III. C b > 101 IV. C b < 104 1. I and IV only 2. II and III only 3. I and III only 4. II and IV only 8. An aqueous system with Na 2 CO 3 , NaCl and NH 4 Cl dissolved in it would require how many equations to find all the unknown equilibrium concentrations? 1. 3 2. 7 3. 4 4. 6 5. 9...
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 Spring '07
 Holcombe
 pH, ml

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