solution. i. Determine the volume, in mL, of 4.00 M stock solution the student needs to prepare 250. mL of 0.150 M weak acid. ii. Describe the procedure the student should use to make 250. mL of 0.150 M weak acid using appropriate equipment selected from the list below. 250 mL beaker 250 mL graduated
solution. i. Determine the volume, in mL, of 4.00 M stock solution the student needs to prepare 250. mL of 0.150 M weak acid. ii. Describe the procedure the student should use to make 250. mL of 0.150 M weak acid using appropriate equipment selected from the list below. 250 mL beaker 250 mL graduated
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter4: Types Of Chemical Reactions And Solution Stoichiometry
Section: Chapter Questions
Problem 84E: The concentration of a certain sodium hydroxide solution was determined by using the solution to...
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A student is conducting a titration between a weak, monoprotic acid and sodium hydroxide, NaOH.
a.The student needs to make 250. mL of 0.150 M weak acid from a 4.00 M stock solution.
i. Determine the volume, in mL, of 4.00 M stock solution the student needs to prepare 250. mL of 0.150 M weak acid.
ii. Describe the procedure the student should use to make 250. 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
b.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 [H3O+].
ii. Determine the Ka of the weak acid.
c.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 equivalence?
iii. A student makes the claim that at equivalence the pH is as a result of the NaOH in solution. Do you agree with the claim? Explain your reasoning.
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