You can obtain smaller and purer crystals by means of using precipitation or using the bigger crystals, because it is better to get them big, then cool them to make them small.
To obtain pure salt from an impure sample, you can use the process of recrystallization. First, dissolve the impure salt in a suitable solvent, such as water, at an elevated temperature. Upon cooling the solution, pure salt will crystallize out while impurities remain dissolved. Finally, filter the solution to separate the crystals from the impurities, and then dry the crystals to obtain pure salt.
To separate rock salt into salt crystals and pure dry sand, first dissolve the rock salt in water, creating a saltwater solution. Next, filter the mixture to separate the sand, which will remain on the filter paper, from the saltwater solution. Finally, evaporate the water from the saltwater solution to obtain pure salt crystals, leaving behind the dry sand collected from the filtration process.
Pure sodium chloride crystals are colorless.
Salt will lower the freezing point of water. So, "pure" water freezes easier than salt water.
The word "salt" or common salt usually is applied to Sodium Chloride. Seawater contains a variety of salts, so people "making" salt from seawater would not just be getting Sodium Chloride.
you have been asekd to analyse some salt-contaminated soil. How would you separte the salt from the soil? (a) write out the method that you would use to obtain pure dry salt and pure dry soil. (b) draw a labelled diagram showing how you equipment would be set up for each stage of your separtion. obviously this is not an answer it is a question i just want question a because i really need this science mark anyone? please? please help me :P
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.
Impure common salt can be purified through the process of recrystallization. This involves dissolving the impure salt in water, filtering out any insoluble impurities, and then allowing the solution to cool slowly so that pure salt crystals form. These crystals can then be separated and dried to obtain purified common salt.
Pure sodium chloride crystals are transparent.
i think by distillation..we can get pure water and salt
Pure sodium chloride crystals are colorless.
Add water and stirr: salt is soluble, sand not. Filter the solution. On the filter re- main sand, in the solution salt. After repetitive evaporations you can obtain salt as crystals.
Salt will lower the freezing point of water. So, "pure" water freezes easier than salt water.
The word "salt" or common salt usually is applied to Sodium Chloride. Seawater contains a variety of salts, so people "making" salt from seawater would not just be getting Sodium Chloride.
Pure salt is obtained from rock salt through a process called evaporation. Rock salt contains impurities and other minerals that are removed when the salt is dissolved in water and then evaporated, leaving behind pure salt crystals. This process helps to separate the salt from any impurities present in the rock salt.
Pure table (sodium chloride, NaCl) is white. Crystals are colorless.
To get a sample of soluble salt, you can dissolve the salt in water, filter out any impurities, then evaporate the water to leave behind the salt crystals. This will give you a pure sample of the soluble salt.