Questions asked after completing quantitative volumetricanalysis of pickling vinegar & NaOH (regular vinegar consists5% acetic acid, CH3COOH. Piclking vinegar consists 7% of theacid).
1. Is there a trend in the values obtained in class? (there wasa trend) Explain.
2. If regular vinegar costs $1.00/L & pickling vinegar costs$1.25/L, which is the best by? (i.e use a logical argument todetermine which gives you the most acetic acid for your dollar)
3. Why do we only include the trials that agree withing 1% ofeach other? What is the difference between accuracy & precisionfor a series of measurements?
4. Identify 4 important sources of systematic (not human) error.Discuss why they are important.
5. If 0.25M potassium hydroxide solution was used as thetitrant, instead of 0.1 M NaOH (aq), would your titration have usedmore or less itrant to reach the end point? Use a logical argumentto determine how much more or less titrant would be required.
