a. Determine the volume, in mL, of 4.00 M stock solution the student needs to prepare 250. mL of 0.150 M weak acid. b. Describe the procedure the student should use to make 250.0 mL of 0.150 M weak acid using appropriate equipment selected from the list below. - 250 mL beaker, 250 mL graduated cylinder, 250 mL volumetric flask, 50 mL Buret filled with 4.00 M weak acid, 500 mL wash bottle filled with distilled water. c. The student titrates 20.0 mL of the weak acid with 0.300 M sodium hydroxide, NaOH (aq). When 5.00 mL of NaOH (aq) has been delivered the pH of the weak acid is 5.328. i. Determine the concentration of H3O+1. ii. Determine the Ka of the weak
A student is conducting a titration between a weak, monoprotic acid and sodium hyhroxide, NaOH. The student needs to make 250. mL of 0.150 M weak acid from a 4.00 M stock solution.
a. Determine the volume, in mL, of 4.00 M stock solution the student needs to prepare 250. mL of 0.150 M weak acid.
b. Describe the procedure the student should use to make 250.0 mL of 0.150 M weak acid using appropriate equipment selected from the list below.
- 250 mL beaker, 250 mL graduated cylinder, 250 mL volumetric flask, 50 mL Buret filled with 4.00 M weak acid, 500 mL wash bottle filled with distilled water.
c. The student titrates 20.0 mL of the weak acid with 0.300 M sodium hydroxide, NaOH (aq). When 5.00 mL of NaOH (aq) has been delivered the pH of the weak acid is 5.328.
i. Determine the concentration of H3O+1.
ii. Determine the Ka of the weak acid.
d. The student continues to titrate the weak acid to equivalence.
i. What volume of NaOH (aq) is required to reach equivalence with the weak acid?
ii. What is the pH at the equivalence point?
iii. A student makes the claim that at equivalence the pH is as a result of the NaOH in solution. Do you agreee with the claim? Explain your reasoning.
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