The following table shows data from the titration offour 10.0 mL samples of a solution containinghydrochloric acid, HCl(aq), using a 0.242 mol/L sodiumhydroxide standard solution. Bromothymol blue isused as an indicator to detect when the endpoint isreached.Titration of 10.0 mL HCl(aq) with 0.242 mol/LNaOH(aq)Trialfinal burette reading (mL)initial burette reading (mL)volume of NaOH(aq) added(mL)colour at endpoint#1 #2 #3 #417.935.0 22.9 40.10.3 17.9 5.9 22.9blue green green greena) Select the most consistent trials and calculate theaverage volume of titrant added.b) Calculate the concentration of the hydrochloricacid solution.Hint: Write a balanced chemical reaction first.You MUST show your work in the space provided.Then, record your final answers with the correctnumber of significant digits and the proper units.

Answered: Image /qna-images/answer/197362f3-3bb3-4b07-93fe-23e0e53c9afa.jpg

a) Select the most consistent trials and calculate the average volume of titrant added. b) Calculate the concentration of the hydrochloric acid solution. Hint: Write a balanced chemical reaction first.

a) Select the most consistent trials and calculate the average volume of titrant added. b) Calculate the concentration of the hydrochloric acid solution. Hint: Write a balanced chemical reaction first.

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 13Q: An acid is titrated with NaOH. The following beakers are illustrations of the contents of the beaker...

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Question

The following table shows data from the titration of
four 10.0 mL samples of a solution containing
hydrochloric acid, HCl(aq), using a 0.242 mol/L sodium
hydroxide standard solution. Bromothymol blue is
used as an indicator to detect when the endpoint is
reached.
Titration of 10.0 mL HCl(aq) with 0.242 mol/L
NaOH(aq)
Trial
final burette reading (mL)
initial burette reading (mL)
volume of NaOH(aq) added
(mL)
colour at endpoint
#1 #2 #3 #4
17.935.0 22.9 40.1
0.3 17.9 5.9 22.9
blue green green green
a) Select the most consistent trials and calculate the
average volume of titrant added.
b) Calculate the concentration of the hydrochloric
acid solution.
Hint: Write a balanced chemical reaction first.
You MUST show your work in the space provided.
Then, record your final answers with the correct
number of significant digits and the proper units.

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