Lithium Carbonate, chemical structure, molecular formula, Reference Standards It effervesces upon the addition of an acid,yielding a colorless gas which,when passed into calcium hydroxide TS,immediately causes a white precipitate to form. Transfer 10g to a 250-mLbeaker,add 50mLof water,then add slowly 50mLof 6Nhydrochloric acid.Cover with a watch glass,and boil the solution for 1hour.Filter the solution through a dried,tared filtering crucible fitted with a glass-fiber filter disk,using suction.Wash the filter with hot water until the last washing is free from chloride when tested with silver nitrate TS.Dry the crucible in an oven at 110for 1hour:the weight of the residue is not more than 0.02%of the weight of Lithium Carbonate taken.
