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EXPERIMENT #6 DETERMINATION OF THE CONCENTRATION OF TARTARIC ACID IN WINE 1. Why must the sodium hydroxide...

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Chemistry

EXPERIMENT #6 DETERMINATION OF THE CONCENTRATION OF TARTARICACID IN WINE

1. Why must the sodium hydroxide concentration be reported tofour significant figures? Why not use only two significantfigures?

2. In the procedure, you added approximately 15 mL of water toeach Erlenmeyer flask. Why did the exact volume of water notmatter? What impact would accidentally adding 17 mL of water haveon the results? Be prepared to explain.

3. Explain the significance of the value for relative standarddeviation in the context of this experiment.

4. Explain the significance of the value for percent error inthe context of this experiment.

5. The stoichiometric ratio in this experiment is 1:2. Determinehow the calculation set-ups would change for the reactionbetween:

HNO3 (aq) + NaOH (aq) = H2O (l) + NaNO3 (aq) OR

H3C5H5O6 (aq) + 3 NaOH (aq) = 3 H2O (l) + Na3C5H5O6 (aq)

Answer & Explanation Solved by verified expert
4.2 Ratings (636 Votes)
Experiment determination of tartaric acid concentration by titration 1 Sodium hydroxide is a hygroscopic salt It absorbs moisture upon standing in air Thus to minimize this error one must weight the sodium hydroxide    See Answer
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