E-StoreHome » Ask & Discuss » Chemistry. » Physical Chemistry « Back to Discussion
Physical Chemistry
18 Feb 2007 11:19:07 IST
0 People liked this
8
694
Comments (8)
18 Feb 2007 15:47:49 IST
Like
0 people liked this
The evaporation of sea water yields crude sodium chloride containing calcium sulphate , sodium sulphate , CaCl2,MgCl2 etc CaCl2 and MgCl2 are deliquescent.For purification, a saturated solution of crude salt is prepared and the insoluble impurities are removed by filtration.The solution is then saturated with HCl gas .Due to common ion effect,crystals of pure NaCl separate out.Chlorides of calcium and magnesium being more soluble remain in the solution.
Cheers!
Cheers!
21 Feb 2007 12:42:56 IST
Like
0 people liked this
The extraction of salt from sea water consists of progressive evaporation of brine in large open ponds using solar heat and wind. As the brine evaporates its concentration rises and the constituent salts crystallise in a set order. During this process, the sodium chloride fraction is separated from the brine over a fixed concentration range in a series of flat rectangular ponds and deposits as a uniform crust.
Free Sign Up!
Preparing for IIT-JEE ?
Arihant Revision Package for IIT JEE - Books, Practice Tests + Rank Predictor
@ INR 1,995/-
For Quick Info
Find Posts by Topics
Physics.
Topics
9397
20092
3672
2186
7617
2827
2638
Mathematics.
Chemistry.
Biology
Institutes
Parents
Board
Fun Zone
|
|
|
|
|
| 35,229,755 Engineering Questions Attempted |
6,69,530 Visitors Monthly |
79 Engg. Exam Covered |
2239 Students Currently Online |
Connect with Us  |
 |
Vriti Communities
Privacy Policy © Vriti 2011
In the correct climate (one for which the ratio of evaporation to rainfall is suitably high) it is possible to use solar evaporation of sea water to produce salt. Brine is evaporated in a linked set of ponds until the solution is sufficiently concentrated by the final pond that the salt crystalises on the ponds floor.