4. how would your experimentally determined vinegar concentration have differed if you had over-titrated (added drops of naoh to the analyte beyond the stoichiometric equivalence point)?

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08-12-2022
Chemistry

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4. how would your experimentally determined vinegar concentration have differed if you had over-titrated (added drops of naoh to the analyte beyond the stoichiometric equivalence point)?

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dipankarkundu4589 dipankarkundu4589 · Answer 1 · 2022-12-18T18:39:57+01:00

The obtained percentage composition of acetic acid would be inaccurate and higher as greater volume of NaOH was being used in the experiment.

When a significant color change is seen, that marks the titration's endpoint (longer than 30 seconds). An excessive amount of titrant can cause the endpoint to be exceeded.

It would be an excess and the color of the solution in the flask would get significantly darker if a little bit more NaOH solution was added. Care must be made to avoid overshooting the terminus because it emerges unexpectedly. A last volume is taken from the buret after the titration has reached its endpoint.

Too much NaOH has been added if you exceed the endpoint and the solution turns bright pink. Add one or two drops of HCl to back-titrate the color to a lighter pink. The volumes consumed should be recorded.

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