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Firstly you grind the rock salt with a pestle.
Then you start to dissolve the salt. After that you filter it.
Last but not least we allow the water to evapourate.
In the evapourating basin there should be pure salt left over.
Add. In rock salt, there will be other contaminants such as magnesium and calcium salts. These have different solubilities, and careful decanting is needed to decant the (say) Mg rich liquid, leaving the Na material behind.
But this is the way it is done at the salt works.
Wiki User
∙ 12y ago
Wiki User
∙ 12y ago- Rock Salt (a mixture of salt, sand and dirt) is crushed into small pieces.
- Water is added to this mixture.
- The mixture is warmed and stirred.
- Only the pure salt dissolves.
- The mixture is filtered.
- The salt solution passes through filter paper.
- The sand and dirt are trapped in the filter paper.
- The solution is evaporated gently to leave dry salt.
Wiki User
∙ 11y agoFirst you get the sea water and boil it vigourously for 30 minutes to kill micro-organisms and also reduce the volume thus concentrating the salt. Then you allow to cool and filter it through filter paper with very fine pores (1 micrometer). following that, allow the water to evaporate. When most of the water has evaporated, spread the residue (salt) out onto a sheet of black plastic and allow to dry in direct sunlight. Grind up the resultant sea salt. Be aware that the salt prepared in this way is not purified and will also contain all other minerals and chemicals that the water contained, but these are generally very low.
Wiki User
∙ 9y agoThe rock salt is grinded, dissolved in water, the solution is filtered and refined by repeated processes of crystallization/recrystallization.
Wiki User
∙ 12y agoyou would put the sand salt into the water. then once the salt has dissolved sive the water into another container to evaporate. once the water has evaporated you will be left with salt.
Wiki User
∙ 10y agoMake a water solution and filter; the sodium chloride solution passes the filter, the sand remain on the filter.
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Why do we get pure salt from rock salt?
Because is not recommended to eat dirty salt.
What is the difference between coarse salt and rock salt?
Rock salt is in some ways similar to Coarse Salt, but do have differences, these are, rock salt is mined from underground deposits and goes through various processing techniques whilst coarse salt ( Kosher) is relatively pure and contains no iodine or any other additives.
How would rock salt form from a solution?
If a solution containing rock salt is boiled, and the solvent evaporates you will be left with rock salt as the precipitate.
What experiment can you could carry out to show rock salt is not as pure as table salt?
You might try dissolving the same weight of rock salt and table salt in the same amount of distilled water and seeing how the solutions match up for clarity.
What ore that is almost pure salt?
Salt is mined, so it would be pure salt. Mined salt, unlike sea salt, has to be processed and cleaned. Chemicals are used for the cleaning process and for making it white.
How do you get pure water from a salt and water solution?
By evaporating the water of the solution and condensing it.
What equimpent would you need to get pure salt from rock salt?
Dissolving tanks, filters and crystallization/recrystallization equipments.
Is rock salt as pure as table salt?
Generally rock salt is more impure than table salt.
Can rock salt be used as table salt?
Rock salt and table salt are both sodium chloride - NaCl; table salt is the pure form of rock salt.
Why do we get pure salt from rock salt?
Because is not recommended to eat dirty salt.
Is making pure salt from rock salt theory or relative?
It's really try it and you will find out relative
Is rock salt a mixture or pure substance Is rock a mixture or a pure substance?
Rock salt contains all the minerals found in the seawater from which it formed. These will be many, but NaCl will be the main one.
What substance found in a soil sample collected in an arid region would most likely be absent in a soil sample collected in a humid region?
rock salt
What is a pump housing?
It is a house which helps rock salt turn into pure salt!
How do you calculat the percent of pure salt in rok salt?
This is possible only after the determination of impurities in the rock salt.
Steps to see if adding salt to water change the temperature at which it boils?
To test if adding salt to water increases the boiling point of the water, do the following: boil a sample of pure water until it boils. Measure the temperature at which the pure water boils. Take another sample of pure water and add salt to it, then boil this sample under the same conditions. Measure the temperature at which the salt water boils. If the latter temperature is higher, salt does increase the boiling point of water.
How do you obtain pure and dry sample of sodium chloride salt?
To obtain a dry sample of salt the process of the evaporation of salty water must take place . Generally salt is produced in the Salt pans that are located close to the coast . The suns energy is used to evaporate ,leaving the residue behind . This residue is a mixture of several salts not just NaCl. To obtain a pure form of salt it is processed by industries and is pure Sodium Chloride.
