A student rushed through this experiment, but noted some procedural errors in their lab notebook. If the following observations were listed in the lab notebook, how would they affected the calculate sodium hypochlorite percentage? Would the calculated percentage be too high, too low, or unchanged by their procedural error? A student forced the remaining liquid in the pipet out with the pipet pump. A student had an air bubble in the buret tip that remained there during the entire titration. A student had an air bubble in the buret tip that came out during the titration.

A student rushed through this experiment, but noted some procedural errors in their lab notebook. If the following observations were listed in the lab notebook, how would they affected the calculate sodium hypochlorite percentage? Would the calculated percentage be too high, too low, or unchanged by their procedural error? A student forced the remaining liquid in the pipet out with the pipet pump. A student had an air bubble in the buret tip that remained there during the entire titration. A student had an air bubble in the buret tip that came out during the titration.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter20: Applications Of Oxidation/reduction Titrations

Section: Chapter Questions

Problem 20.6QAP

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In the experiment, the amount of acetic acid in vinegar was determined by titrating with 0.1 M NaOH solution. In the analysis, three trials were performed to obtain more precise result. The table shows the initial and final burette readings for three titrations: Initial Burette Reading (mL) Final Burette Reading (mL) Trial 1 2.9 10.6 Trial 2 10.6 18.1 Trial 3 18.1 25.7 According to the given data, calculate molarity of acetic acid in the commercial vinegar. Please be sure that your answer includes followings; a) moles of NaOH for each trial b) average mole of NaOH c) average mole of acetic acid in 50 mL solution d) average mole of acetic acid in 250 mL solution e) molarity of acetic acid in vinegar.
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