[SOLVED] lab 14 Identification of an unknown acid
May 22nd, 2022
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[SOLVED] lab 14 Identification of an unknown acid
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this lab only about the Molar Mass of a Monoprotic Unknown Acid we skipped the before it
the lab manual attached lab 14 from page 152
I attached my data I only need table 14.9
- Title page
- Name, date, experiment number, experiment title
Objective
- Write all objectives of this experiment. Use complete sentences.
Introduction The introduction must address these points
- What is a titration? What is the purpose of a titration experiment?
- What is a primary standard? What was the primary standard in this experiment? (If you didn’t use a primary standard, indicate what it should have been))
- Why were there 2 standard solutions? That is, why wasnt NaOH(aq) used as a primary standard for titrating the unknown acid? (If you didn’t use a primary standard, then explain why NaOH(aq) should be used as a primary standard.
- How would melting of a pure sample differ from melting of an impure sample?
- What is Ka? What is pKa? What does a high Ka mean? What does a high pKa mean?
- What is a buffer?
- For a weak acid, under what conditions will pH = pKa?
Procedure
- Cite the manual
- Include any modifications to the procedure
ResultsProvide tables as indicated in the lab manual.Or, if it is available, complete an Excel spreadsheet. (A link will be placed here if it becomes available).Calculations
- Write a sample calculation for each type of calculation
- Molar mass of unknown.
- Calculation for the half titration point.
Discussion
- Your grade will be largely assigned based on correct identification of your unknown. If you are fairly certain that you have misidentified your unknown acid, partial credit will be given if you explain the reason for the uncertainty and provide some plausible sources of error. Miscalculation is not a valid source of error.
- You must list the following
- The identity of your unknown
- Here is the list of https://1drv.ms/x/s!AqgY5DQycC1TdJoM7acjbw8NFjI
- The experimental molar mass and calculated molar mass
- The experimental melting point for your unknown
- The experimental pKa for your unknown
- The literature melting point for your unknown (with a citation for the reference)
- The literature pKa for your unknown (with a citation for the reference)
- The identity of your unknown
Conclusion
- Write a conclusion
- Remember to report your findings
- Remember to be quantitative