4 . The labware we used in Quant Lab is divided into “qualitative” or “quantitative” analytical purpose. One of the important laboratory skills we learned is to know what specific apparatus is appropriate for the task at hand. For the following procedures, which SPECIFIC glassware, or balance ( CORRECT NAMES, be specific ) should be used? Weigh about 2 g of solid KI to be added to the sample solution. ___________ Obtain a unknown water sample to be diluted to 250 mL for the determination of its hardness. ____________ Collect washings from the crucible suction to see if the AgCl precipitate still contains unreacted silver (I). _________ Mix K2Cr2O7 and KI solutions to be ready for titration. The mixture container is _______________ Measure the mV values of fluoride standard and sample solutions. Theoretically, the solution containers should be _______________________ Weigh 1 g solid KSCN that is poured into the thiosulfate – iodine titration. __________________ Weigh 1.5 g of hydroxylamine to be ready for the spectrophotometric determination of iron. ______________________ Weigh three crucibles in gravimetric analysis. __________________ Measure out 2 mL of concentrated H2SO4 solution to dissolve the copper oxide ore sample.. _________________ Deliver 10.00 mL of the stock fluoride solution to be diluted to 100 mL. ________________________ Weigh out about 0.42 g of NaF standard to be dried in an oven. ________________ In the iodometry lab, the produced iodine was titrated with standard thiosulfate solution. Give the name of the container for the newly generated iodine. ________________ Ready the unknown sample that was just taken from the oven for subsequent weighing. _______________ Measure out 3 mL of concentrated NaOH solution for the preparation of approximately 0.1 M solution. ______

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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4 . The labware we used in Quant Lab is divided into “qualitative” or “quantitative” analytical purpose. One of the important laboratory skills we learned is to know what specific apparatus is appropriate for the task at hand. For the following procedures, which SPECIFIC glassware, or balance ( CORRECT NAMES, be specific ) should be used?

Weigh about 2 g of solid KI to be added to the sample solution. ___________

Obtain a unknown water sample to be diluted to 250 mL for the determination of its hardness. ____________

Collect washings from the crucible suction to see if the AgCl precipitate still contains unreacted silver (I). _________

Mix K₂Cr₂O₇ and KI solutions to be ready for titration. The mixture container is _______________

Measure the mV values of fluoride standard and sample solutions. Theoretically, the solution containers should be

_______________________

Weigh 1 g solid KSCN that is poured into the thiosulfate – iodine titration. __________________

Weigh 1.5 g of hydroxylamine to be ready for the spectrophotometric determination of iron. ______________________

Weigh three crucibles in gravimetric analysis. __________________

Measure out 2 mL of concentrated H₂SO₄ solution to dissolve the copper oxide ore sample.. _________________

Deliver 10.00 mL of the stock fluoride solution to be diluted to 100 mL. ________________________

Weigh out about 0.42 g of NaF standard to be dried in an oven. ________________

In the iodometry lab, the produced iodine was titrated with standard thiosulfate solution. Give the name of the

container for the newly generated iodine. ________________

Ready the unknown sample that was just taken from the oven for subsequent weighing. _______________

Measure out 3 mL of concentrated NaOH solution for the preparation of approximately 0.1 M solution. ______

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