Question

Common name of Sodium chloride is___ salt.

Answer 1

Hint:Sodium chloride is one of the most widely used salts. It is given various names depending on its occurrence, use and properties. The chemical formula of Sodium chloride is NaCl.

Complete answer:
Molar mass of Sodium chloride salt is \[58.5{\text{gmo}}{{\text{l}}^{ - 1}}\] . It is a colorless and odorless cubic crystal. Melting point and boiling of sodium chloride is \[{800^o}{\text{C and }}{1465^o}{\text{C}}\] respectively. Sea water is the main source and also found in salt lakes. Common names used for sodium chloride are common salt as it is used commonly in various processes, table salt for its regular use in household food items, regular salt, sea salt, rock salt and halite.
Preparation of sodium chloride from sea water is as follows: Firstly evaporation of water and other volatile substances from the sea water by solar heating or manual heating which leads to production of crude sodium chloride. This crude sodium chloride contains both soluble and insoluble impurities. The insoluble impurities of crude sodium chloride like sodium sulfate, magnesium chloride, calcium chloride, etc can be removed by filtration. Now the filtrate contains sodium chloride and some soluble impurities. Now hydrochloric acid or HCl gas is passed over filtrate which leads to formation of pure sodium chloride to be precipitated out and soluble impurities remain dissolved in water.
Use of table salt is as follow as: as a preservative for pickles, meat and fish, used for making freezing mixture with ice, for making chlorine and sodium hydroxide at industrial level, in Solvay process to produce calcium chloride and sodium carbonate, for production of sodium sulfate and hydrochloric acid in Mannheim and Hargreaves process, acts as brine in textile and dyeing process, etc.

Thus, the correct answer is table salt.

Note:
Properties of sodium chloride are as follow as: table salt is slightly hygroscopic due to the presence of small amounts of magnesium and calcium chloride in the crystal, on reaction with silver nitrate it produces white precipitate of silver chloride according to the reaction: \[{\text{NaCl}} + {\text{AgN}}{{\text{O}}_3} \to {\text{NaN}}{{\text{O}}_3} + {\text{AgCl}}\left( {{\text{white ppt}}} \right)\] .