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Solved: Desalination is a process of removing dissolved
Chapter 12, Problem 95P(choose chapter or problem)
Desalination is a process of removing dissolved salts from seawater.
(a) Briefly describe how you would apply distillation and freezing for this purpose.
(b) Desalination can also be accomplished by reverse osmosis, which uses high pressure to force water from a more concentrated solution to a less concentrated one. Assuming a sample of seawater is 0.50 M in NaCl, calculate the minimum pressure that needs to be applied for reverse osmosis at \(25^{\circ} \mathrm{C}\). What is the main advantage of reverse osmosis over distillation and freezing?
Questions & Answers
QUESTION:
Desalination is a process of removing dissolved salts from seawater.
(a) Briefly describe how you would apply distillation and freezing for this purpose.
(b) Desalination can also be accomplished by reverse osmosis, which uses high pressure to force water from a more concentrated solution to a less concentrated one. Assuming a sample of seawater is 0.50 M in NaCl, calculate the minimum pressure that needs to be applied for reverse osmosis at \(25^{\circ} \mathrm{C}\). What is the main advantage of reverse osmosis over distillation and freezing?
ANSWER:
Step 1 of 3
(a)
The distillation procedure is used to remove salts from seawater (distillation). Sea water must first be turned into steam, and when the steam is condensed, pure water is formed.