Table 12.2 Common drying agents Acidity Hydrated Сарасity? Completenessb Rate Use Magnesium sulfate Neutral MgSO4 ·7H,O High Medium Rapid General Sodium sulfate Neutral High General Na,SO, 7H,O Na,SO, 10H,0 CaCl, 2H,O CaCI,6H,O CaSO, %H,O CaSO, 2H,O K,CO;-1½H,O K,CO, 2H,0 Low Medium High Hydrocarbons Halides Calcium chloride Neutral Low Rapid Calcium sulfate Neutral Low High Rapid General (Drierite) Potassium Basic Medium Medium Medium Amines, esters, bases, ketones carbonate Potassium Basic Rapid Amines only hydroxide Molecular sieves Neutral High Extremely high General (3 or 4 Å) aAmount of water removed per given weight of drying agent. ÞRefers to amount of H,O still in solution at equilibrium with drying agent. "Refers to rate of action (drying).
Table 12.2 Common drying agents Acidity Hydrated Сарасity? Completenessb Rate Use Magnesium sulfate Neutral MgSO4 ·7H,O High Medium Rapid General Sodium sulfate Neutral High General Na,SO, 7H,O Na,SO, 10H,0 CaCl, 2H,O CaCI,6H,O CaSO, %H,O CaSO, 2H,O K,CO;-1½H,O K,CO, 2H,0 Low Medium High Hydrocarbons Halides Calcium chloride Neutral Low Rapid Calcium sulfate Neutral Low High Rapid General (Drierite) Potassium Basic Medium Medium Medium Amines, esters, bases, ketones carbonate Potassium Basic Rapid Amines only hydroxide Molecular sieves Neutral High Extremely high General (3 or 4 Å) aAmount of water removed per given weight of drying agent. ÞRefers to amount of H,O still in solution at equilibrium with drying agent. "Refers to rate of action (drying).
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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Calculate the weight of water that could be removed from a wet organic phase using 50.0 mg of magnesium sulfate. Assume that it gives the hydrate listed in Table 12.2.
Transcribed Image Text:Table 12.2 Common drying agents
Acidity
Hydrated
Сарасity?
Completenessb
Rate
Use
Magnesium
sulfate
Neutral MgSO4 ·7H,O
High
Medium
Rapid
General
Sodium sulfate
Neutral
High
General
Na,SO, 7H,O
Na,SO, 10H,0
CaCl, 2H,O
CaCI,6H,O
CaSO, %H,O
CaSO, 2H,O
K,CO;-1½H,O
K,CO, 2H,0
Low
Medium
High
Hydrocarbons
Halides
Calcium chloride
Neutral
Low
Rapid
Calcium sulfate
Neutral
Low
High
Rapid
General
(Drierite)
Potassium
Basic
Medium
Medium
Medium
Amines, esters,
bases, ketones
carbonate
Potassium
Basic
Rapid
Amines only
hydroxide
Molecular sieves
Neutral
High
Extremely
high
General
(3 or 4 Å)
aAmount of water removed per given weight of drying agent.
ÞRefers to amount of H,O still in solution at equilibrium with drying agent.
"Refers to rate of action (drying).
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