Question

what is sodium hydroxide give its preparation and uses

Answer 1

Sodium hydroxide is very hygroscopic (absorbs water from air) and also absorbs carbon dioxide from air. Uses:Sodium hydroxide is one of the most widely used bases in industry.

The net result is the formation of an aqueous solution of ammoniumhydrogen carbonate, NH4HCO3. Another raw material is sodiumchloride, NaCl. When NaCl is added to aqueous NH4HCO3, a precipitate of sodium hydrogen carbonate, NaHCO3, forms.

Sodium hydrogen carbonate is used in medicine (frequently as an antacid), as a leavening agent in baking (it is “baking soda”), and in the manufacture of sodiumcarbonate, Na2CO3. “Baking powder” is a mixture composed mainly of NaHCO3.

Answer 2

NaCl + H20 ------- NaoH + HCL. When we mix water in sodium chlorine , it forms sodium hydroxide and hydrochloric acid.