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Students performing vinegar analyses made several mistakes in their experiments. Explain in detail how each error below...

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Chemistry

Studentsperforming vinegar analyses made several mistakes in theirexperiments. Explain in detail how each error below will affect thefinal result (% weight of acetic acid in vinegar) of each student'sexperiment. Show all steps of logic followed in analyzing theeffects of the mistake (remember that the experiment had twoparts):  

1.Student A used a wet beaker to transfer the NaOH solution to bestandardized from its original container to the buret.

2.Student B did not fill the tip of the buret with titrant beforestarting the NaOH standardization, so the tip contained air whenthe titration was started, but was filled after the firststandardization.

3.Student C over-titrated the php solution, but ignored it andcontinued on with calculations.  

4.Student D was in a hurry to leave the lab. He finished thetitration of vinegar without waiting for the pink color to persistfor 15 seconds. He recorded the volume of NaOH used, just to noticethat the pink color disappeared. He ignored this observation andproceeded with calculations.

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