16. Consider the following four titrations. i. 100.0 mL of 0.10 M HCl titrated by 0.10 M NaOH ii. 100.0 mL of 0.10 M NaOH titrated by 0.10 M HCI iii. 100.0 mL of 0.10 M CH;NH, titrated by 0.10 M HCI iv. 100.0 mL of 0.10 M HF titrated by 0.10 M NaOH Rank the titrations in order of: a. increasing volume of titrant added to reach the equivalence point. b. increasing pH initially before any titrant has been added. c. increasing pH at the halfway point in equivalence. d. increasing pH at the equivalence point.

3. Determine the volume of hydrochloric acid needed to reach the equivalence point during the titration of 25.0 mL of 0.0250 M ammonia with 0.03127 M HCI. I 4. From the previous problem (item no.3), what is the pH of the solution at equivalence point? |

At which point in the titration curve below is a buffer present? C Volume titrant added (mL) A. Ο Ρoint A В. О Рoint B C. O Point C D. O Point D E. OA buffer is not present at any point during this titration.

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The point where the indicator actually changes color is called the. . of the titration. 1. start point 2. middle point 3. end point 4. zero point а. 1 O b. 2 с. 3 O d. 4

4 Volume HCI Added (mL) Strong Base/Weak Acid Strong Acid/Strong Base Strong Acid/Weak Base Weak Acid/VWeak Base

Consider the titration of 130. mL of 0.355 M HCI with 0.275 M NaOH. What is pH after 115 mL of NaOH has been added? O 0.95 O 1.84 O 12.2 O-0.450 O 1.23

Consider a solution of a weak acid  being titrated with a solution of a strong base to beyond the equivalence point. Which of the following statements is incorrect?   a. The pH will increase intially and then change very little until the equivalence point is reached   b. Only a small percentage of the weak acid will react with the added base   c. The volume of the base solution required to reach the equivalence point can be less than, equal to, or more than the volume of the acid solution.   d. At the equivalence point, the solution will be basic   e. Beyond the equivalence point, the solution will be basic   f. None of the above   g. The pH of the solution in the tiration flask is affected by the total volume at any given point

Consider the titration of 25.00 mL of 0.100 M HCl with 0.050 M NaOH. At what volume of added NaOH is the solution a buffer solution?

Suppose that 50.00 mL of 0.100 M acetic acid is titrated with 0.100 M NaOH. (Weak Acid - Strong Base Titration) Find the pH if the following volume of NaOH are added. i. 30 mL NaOH ii. 35 mL NaOH iii. 40 mL NaOH iv. 45 mL NaOH v. 50 mL NaOH