A titration is carried out to determine the concentration of an acetic acid solution

CHEMISTRY · Multi-part · AP · Chemistry · Chemical Reactions · Chemical Reactions

Problem

A titration is carried out to determine the concentration of an acetic acid solution. A

25.00\,\text{mL}

aliquot of the acid is titrated with

0.1220\,\text{M}

NaOH. Because the analyst adds titrant too quickly near the end, the indicator changes color after an excess of

0.35\,\text{mL}

NaOH has already been delivered. Answer the following questions. Assume acetic acid is monoprotic. (a) The total volume of NaOH delivered at the end point is

27.18\,\text{mL}

. Using this value, calculate the *uncorrected* molarity of the acetic acid. (b) Correct the calculation from part (a) by accounting for the

0.35\,\text{mL}

of excess NaOH. Report the *true* molarity of the acetic acid. (c) Determine the percent error introduced by the end-point overshoot, using the corrected value from part (b) as the accepted value.

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