For the following questions (Q1-Q4), consider the compound CoCl2 • 6H2O (cobalt (II) chloride hexahydrate) which comes as beautiful red-purple crystals. Katie weighs out 2.51 g of the CoCl2 • 6H2O compound on the balance for her experiment. Q1. Determine the molar mass of CoCl2 • 6H2O compound. Q2. Convert 2.51 g of the CoCl2 • 6H2O to moles. Q3. Katie heats her hydrate to remove the water and obtain the anhydrous cobalt (II) compound CoCl2. Her results are below. Complete Katie’s data table of experimental results. Mass of dry crucible + lid42.37 gMass of dry crucible + lid + CoCl2 • 6H2O (hydrate)44.88 gMass of CoCl2 • 6H2O2.51 gMass of crucible + lid + CoCl2 (after heating)43.79 gMass of CoCl2 (anhydrous)gMass of water removedgMolar mass of water18.02 g/molMolar mass of CoCl2129.84 g/molMoles of H2OmolMoles of CoCl2molMolar ratio of water to CoCl2 (experimental) Molar ratio of water to CoCl2 (theoretical)6.00% error of the molar ratio% Q4. What was the most likely source of error in Katie’s experiment?

Given data: Mass of CoCl2 • 6H2O = 2.51 g We know that, Molar mass of Co = 58.933 g/mol Molar mass…

Answered: For the following questions (Q1-Q4),…

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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For the following questions (Q1-Q4), consider the compound CoCl₂ • 6H₂O (cobalt (II) chloride hexahydrate) which comes as beautiful red-purple crystals. Katie weighs out 2.51 g of the CoCl₂ • 6H₂O compound on the balance for her experiment.

Q1. Determine the molar mass of CoCl₂ • 6H₂O compound.

Q2. Convert 2.51 g of the CoCl₂ • 6H₂O to moles.

Q3. Katie heats her hydrate to remove the water and obtain the anhydrous cobalt (II) compound CoCl₂. Her results are below. Complete Katie’s data table of experimental results.

Mass of dry crucible + lid	42.37 g
Mass of dry crucible + lid + CoCl₂ • 6H₂O (hydrate)	44.88 g
Mass of CoCl₂ • 6H₂O	2.51 g
Mass of crucible + lid + CoCl₂ (after heating)	43.79 g
Mass of CoCl₂ (anhydrous)	g
Mass of water removed	g
Molar mass of water	18.02 g/mol
Molar mass of CoCl₂	129.84 g/mol
Moles of H₂O	mol
Moles of CoCl₂	mol
Molar ratio of water to CoCl₂ (experimental)
Molar ratio of water to CoCl₂ (theoretical)	6.00
% error of the molar ratio	%

Q4. What was the most likely source of error in Katie’s experiment?

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