What are the physical and chemical properties of common table salt?
PHYSICAL PROPERTIES
Odourless, white, cubic crystals
Hygroscopic
Characteristic salty taste
Melting point = 800.8 °C
Boiling point = 1465 °C
= 2.165 g/cm³
Solubility at 25 °C = 35.9 g/100 g water
Vapour pressure at 865 °C = 1 mm Hg
Solid does not conduct electricity
Liquid conducts electricity
Aqueous solution conducts electricity
CHEMICAL PROPERTIES
Does not undergo combustion
of molten NaCl forms chlorine gas and metallic sodium
##”2NaCl(l)” → “2Na(l)” + “Cl”_2″(g)”##
Concentrated sulfuric acid converts it to hydrogen chloride
##”2NaCl(s)” + “H”_2″SO”_4″(l)” → “Na”_2″SO”_4(s) + 2″HCl”(g)##
Aqueous solution reacts with aqueous silver nitrate to form silver chloride
##”NaCl(aq)” + “AgNO”_3″(aq)” → “NaNO”_3″(aq)”+ “AgCl(s)”##