3. If a student weighed out 0.495 g of KHP, dissolved it in 50 ml of water and used 22.3 ml of a NaOH solution to neutralize the KHP, what is the molarity of the NaOH? 4. After the student made the working NaOH solution above, he conducted a titration of an HCI solution of unknown concentration. If the student used a 20.5 ml aliquot of the HCl solution and used 22.7 ml of the NaOH solution from #3 above to reach the endpoint, what is the concentration of the HCI solution?

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter4: Types Of Chemical Reactions And Solution Stoichiometry
Section: Chapter Questions
Problem 47E
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Question 4: After the student made the working NaOH solution above, he conducted a titration of an HCl solution of unknown concentration. If the student used a 20.5 ml aliquot of the HCl solution and used 22.7 ml of the NaOH solution from #3 above to reach the endpoint, what is the concentration of the HCl solution? 

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2. Calculate the molar mass of KHP.
3. If a student weighed out 0.495 g of KHP, dissolved it in 50 ml of water and used 22.3 ml of a
NaOH solution to neutralize the KHP, what is the molarity of the NaOH?
4. After the student made the working NAOH solution above, he conducted a titration of an HCI
solution of unknown concentration. If the student used a 20.5 ml aliquot of the HCI solution and
used 22.7 ml of the NaOH solution from #3 above to reach the endpoint, what is the
concentration of the HCI solution?
5. A student conducted three trials to determine the concentration of an unknown concentration
of HCI. In the first trial the calculated concentration was 0.104 M, the second trial was 0.113 M
and the third trial was 0. 108 M. What is the percent difference between the first two trials and
based on the lab procedures guidelines what would the average molarity be?
Transcribed Image Text:Page of 7 2. Calculate the molar mass of KHP. 3. If a student weighed out 0.495 g of KHP, dissolved it in 50 ml of water and used 22.3 ml of a NaOH solution to neutralize the KHP, what is the molarity of the NaOH? 4. After the student made the working NAOH solution above, he conducted a titration of an HCI solution of unknown concentration. If the student used a 20.5 ml aliquot of the HCI solution and used 22.7 ml of the NaOH solution from #3 above to reach the endpoint, what is the concentration of the HCI solution? 5. A student conducted three trials to determine the concentration of an unknown concentration of HCI. In the first trial the calculated concentration was 0.104 M, the second trial was 0.113 M and the third trial was 0. 108 M. What is the percent difference between the first two trials and based on the lab procedures guidelines what would the average molarity be?
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