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11 Nov 2019
I need help with these. Thanks! following equipment from highest precision to lowes precison i micauring volumsohiained thk onk at one of each piece of equipment and determine how many significant figures can be nt: Look at one apment last significant figure is estimated between the graduations) can be Equipment Beaker Buret 100mL Graduated Cylinder Precision Rank (1,2,3) where 1-Highest ã. 2 CRITICAL THINKING QUESTIONS: 2. Having completed a series of titrations, list several errors that might occur or might have occurred in your titrations whose effects can be reduced by repeating the determination over several trials. (Hint: Think carefully about every aspect of performing the titration and any problems that you may have encountered. Don 't waste your time with trivial problems like spilling the sample that would have required you to start again anyway, Think more deeply about the experiment that you have performed) 3. Why do you think the instructions call for you to maintain a full buret at the beginning of each trial? In other words...why would it not be good technique to have to refill the buret DURING a titration? 4. Why do you think the instructions told you not to leave the fiunnel in the buret during the titration? 5. At multiple points in the procedure you were advised to add water to the flask you were titrating into. This was done to provide enough volume to be able to work with and see well and to make sure that all of the titrant was in solution instead of stuck to the side of the flask. If the calculation of molarity is based on moles of solute per liter of solution, why is it acceptable to add this extra water without wonying about it in calculations?
I need help with these. Thanks!
following equipment from highest precision to lowes precison i micauring volumsohiained thk onk at one of each piece of equipment and determine how many significant figures can be nt: Look at one apment last significant figure is estimated between the graduations) can be Equipment Beaker Buret 100mL Graduated Cylinder Precision Rank (1,2,3) where 1-Highest ã. 2 CRITICAL THINKING QUESTIONS: 2. Having completed a series of titrations, list several errors that might occur or might have occurred in your titrations whose effects can be reduced by repeating the determination over several trials. (Hint: Think carefully about every aspect of performing the titration and any problems that you may have encountered. Don 't waste your time with trivial problems like spilling the sample that would have required you to start again anyway, Think more deeply about the experiment that you have performed) 3. Why do you think the instructions call for you to maintain a full buret at the beginning of each trial? In other words...why would it not be good technique to have to refill the buret DURING a titration? 4. Why do you think the instructions told you not to leave the fiunnel in the buret during the titration? 5. At multiple points in the procedure you were advised to add water to the flask you were titrating into. This was done to provide enough volume to be able to work with and see well and to make sure that all of the titrant was in solution instead of stuck to the side of the flask. If the calculation of molarity is based on moles of solute per liter of solution, why is it acceptable to add this extra water without wonying about it in calculations?
Casey DurganLv2
16 May 2019