For details of the complex process for the separation of the lanthanum salts from cerite, see R.
Lanthanum chloride, LaCl3, is obtained in the anhydrous condition by heating lanthanum ammonium chloride or, according to C.
Lanthanum oxide, La2O3, is a white powder obtained by burning the metal in oxygen, or by ignition of the carbonate, nitrate or sulphate.
Lanthanum carbide, LaC2, is prepared by heating the oxide with carbon in the electric furnace (H.
By evaporation of a solution of lanthanum oxide in hydrochloric acid to the consistency of a syrup, and allowing the solution to stand, large colourless crystals of a hydrated chloride of the composition 2LaCl3.
Lanthanum sulphide, La2S3, is a yellow powder, obtained when the oxide is heated in the vapour of carbon bisulphide.
Lanthanum hydroxide, La(OH)3, is a white amorphous powder formed by precipitating lanthanum salts by potassium hydroxide.
After a long series of trials a mantle was made with lanthanum oxide; immersed in flame its beam was particularly bright, now for the first time suggesting that the rare earths might yield light on a large scale.
During an absence of several days, the inventor left a mantle of lanthanum oxide locked up in his laboratory.
The separation of lanthanum and didymium in the solution from which the cerium has been precipitated is effected by precipitating them together as oxalates, igniting, and dissolving in dilute nitric acid.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "lanthanum" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: gold; iron; lead; metal; silver
