...united filtrates from the iron precipitation to a volume of about 200 cc, add 10 cc of strong HNO2 and boil until all CO2 is expelled. Neutralize the...adding ammonium acetate in excess, filter and add the nitrate to the one from the first precipitation of lead vanadate. Reserve the precipitate of lead vanadate...

...Neutralize the free acid with ammonia (until a slight permanent precipitate appears), then add 4 cc of HNO, for each 100 cc of liquid. Now add 10 cc of a 20 per...precipitation of lead vanadate by adding ammonium acetate hi excess, filter and add the filtrate to the one from the first precipitation of lead vanadate. Reserve...

...per cent. pure. 4. Heat the liquid containing the lead vanadate precipitate on the steam-bath for one hour or more, filter on a tight filter and wash with...neutralize as before, add 3 cc. of nitric acid in excess, then 2 cc. of lead acetate solution and repeat the precipitation of lead vanadate by adding ammonium...

...per cent. pure. 4. Heat the liquid containing the lead vanadate precipitate on the steam-bath for one hour or more, filter on a tight filter and wash with...neutralize as before, add 3 cc. of nitric acid in excess, then 2 cc. of lead acetate solution and repeat the precipitation of lead vanadate by adding ammonium...

...cent acetic acid. Heat the liquid containing the lead vanadate precipitate on the steam bath for one hour or more, filter on a tight filter and wash with...precipitate in the least possible quantity of hot dilute (not stronger than i — 3) nitric acid, neutralise as before, add 3 cc. of UNO , in excess, add 2...

...99 per cent pure. Heat the liquid containing the lead-vanadate precipitate on the steam bath for one hour or more, filter on a tight filter, and wash with...precipitate in the least possible quantity of hot, dilute [not stronger than 1:5] nitric acid, o Moore, RB, and Kithil, KL, A preliminary report on uranium,...

...per cent pure. Heat the liquid containing the lead vanadate, precipitate on the steam bath for 1 hr. or more, filter on a tight filter, and wash with warm...before, add 3 cc of nitric acid in excess, add 2 cc of leadacetate solution and repeat the precipitation of lead vanadate by adding ammonium acetate in excess,...

...and 70 cc. of acetic acid 99 per cent pure. the steam-bath for one hour or more, filter on a close filter and wash with warm water. Dissolve the precipitate...neutralize as before, add 3 cc. of nitric acid in excess, then 2 cc. of lead acetate solution and repeat the precipitation of lead vanadate by adding ammonium...

...Neutralize the free acid with ammonia (until a slight permanent precipitate appears), then add 4 cc of HNO, for each 100 cc of liquid. Now add 10 cc of a 20 per...adding ammonium acetate in excess, filter and add the nitrate to the one from the first precipitation of lead vanadate. Reserve the precipitate of lead vanadate...

...99% acetic acid. Heat the liquid containing the lead vanadate precipitate on the steam bath for one hour or more, filter on a tight filter and wash with warm water.. 1 Cf. US Bureau of Mines, Bulletin 70, by RB Moore and KL Kithil, p. 88Dissolve the precipitate in...