Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Why is water not a good recrystallization solvent for sodium benzoate?
a. Sodium benzoate is soluble in cold water.
b. Sodium benzoate is soluble in hot water.
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- 1. Concentrated HCL has a specific gravity of 1.185 and is 36.5% (w/w) in HCl. Describe how 1.0 L of 0.05 M HCl would be prepared from the concentrated Reagentarrow_forwardAssume that your compound recrystallizes equally well from benzyl alcohol and isopropyl alcohol. Which solvent is the better choice for recrystallization? a. Benzyl alcohol because it is miscible with water. b. Isopropyl alcohol is better because it has a much lower boiling point and is easier evaporate off c. A mixed solvent - benzyl alcohol and isopropyl alcohol d. It doesn't matter which one if they work equally in the recrystallization process.arrow_forwardWhich of these is NOT true of a good recrystallization solvent? Which of these is NOT true of a good recrystallization solvent? a) The compound is insoluble in the solvent when it is cold. b) The solvent boiling temperature is at least 40 °C. c) The solvent has many impurities. d) The compound is soluble in the solvent when it is hot.arrow_forward
- 5. What is pascalization? a. The use of hydrostatic pressure in sterilization, with or without added heat. b. The use of osmotic pressure in sterilization, with or without added heat. c. The use of psychological pressure in sterilization, with or without added heat. d. You misspelled pasteurization. e. None of the above.arrow_forwardIn a mixed solvent system, what is the role of the "poor" solvent? a.to DECREASE the solubility of the solute in the good solvent and saturate the solution b. to INCREASE the solubility of the solute in the good solvent and saturate the solution c. to DECREASE the boiling point of the mixturearrow_forward6. During the recrystallization procedure, a two-solvent system is used. What is a two-solvent system. Explain why two-solvent systems are used in recrystallization.arrow_forward
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