Post lab question. Section/Group: Pest-Lab Questions (Turn in to your Instructor
ID: 968327 • Letter: P
Question
Post lab question. Section/Group: Pest-Lab Questions (Turn in to your Instructor with the post laboratory report for this experiment.) How would your calculation of the molarity of KMnO, been affected, if at all: (Clearly explain your reasoning a simple one-word answer is not sufficient.) 1. if you had not rinsed your buret with the stock KMnO, solution before beginning the titration? if you thought you reached the end point, but the color faded within 15 seconds and you did not add more KMnO, solution? 2. 3. if you had been unable to complete the titration in a single period, but had stored the KMnO solution for several days before returning and picking up where you left off in the experiment without additional standardization? if you had added the KMno, too rapidly and your end point was an opaque purplish-brown rather than a clear solution with a hint of purple? 4. 5. if you had added twice as much sulfuric acid and water as was called for in the procedure?Explanation / Answer
(1) It gives slighly less concentration of KMnO4 than the original
(2) It gives more molarity of KMnO4 than its original molarity
(3) It also gives less concentration of KMnO4
(4) it gives less amount of molarity than its original
(5)