1. Given your intended theoretical yield of 15.0 g of alum, KAl(SO4)2 12 H₂O, calculate the amount of aluminum required for the "reduced-scale" synthesis. Use this result (along with the 12.0 g Al suggested in the original procedure) to calculate the value of the scaling factor by which all reagents must be reduced. 2. From the dilution expression (M₁V₁ = M₂V2) calculate the volumes of H₂SO4 and KOH needed, given that the actual concentrations of these reagents available in lab (9.00 M H₂SO4 and 1.40 M KOH) are different from the concentrations called for in the original procedure (10.0 M H₂SO4 and 2.00 M KOH). Finally, scale the resulting volumes down by the factor calculated in (1) above. Report your volumes to the nearest ±0.1 mL.
1. Given your intended theoretical yield of 15.0 g of alum, KAl(SO4)2 12 H₂O, calculate the amount of aluminum required for the "reduced-scale" synthesis. Use this result (along with the 12.0 g Al suggested in the original procedure) to calculate the value of the scaling factor by which all reagents must be reduced. 2. From the dilution expression (M₁V₁ = M₂V2) calculate the volumes of H₂SO4 and KOH needed, given that the actual concentrations of these reagents available in lab (9.00 M H₂SO4 and 1.40 M KOH) are different from the concentrations called for in the original procedure (10.0 M H₂SO4 and 2.00 M KOH). Finally, scale the resulting volumes down by the factor calculated in (1) above. Report your volumes to the nearest ±0.1 mL.
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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Solve question 2 using the dilution expression.
Transcribed Image Text:1. Given your intended theoretical yield of 15.0 g of alum, KAI(SO4)2 12 H₂O,
calculate the amount of aluminum required for the "reduced-scale" synthesis.
Use this result (along with the 12.0 g Al suggested in the original procedure) to
calculate the value of the scaling factor by which all reagents must be reduced.
2. From the dilution expression (M₁V₁= M₂V2) calculate the volumes of H₂SO4 and
KOH needed, given that the actual concentrations of these reagents available in
lab (9.00 M H₂SO4 and 1.40 M KOH) are different from the concentrations called
for in the original procedure (10.0 M H₂SO4 and 2.00 M KOH). Finally, scale the
resulting volumes down by the factor calculated in (1) above. Report your
volumes to the nearest ±0.1 mL.
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