Chemistry post-Lab
1) If the buret had been wet with water and not adequately rinsed with base would your experimental
value for concentration of NaOH be higher of lower than the true value? Explain
2) If you had performed all four titrations using the buret solution from question #1, would your error
be systematic or random? Explain.
3) If 0.839 g of KHP were titrated, and 45.82 mL NaOH solution were necessary to reach the equivalence
point, what is the concentration of the NaOH solution? (Make sure to report the correct number of
significant figures).
4) The most common error when preforming a titration, is when additional titrant is added past the
equivalence point. If in your experiment you had added an excess volume of NaOH, the flask turned
dark pink, how would this error affect your experimental value for concentration of NaOH?
Concentration of NaOH would be higher, lower, or unchanged. Explain
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