3 physical properties of lithium hydride

Lithium hydride

Physical hydride is an inorganic compound with the formula Li H. This alkali metal hydride lithium hydride 3 physical properties of lithium hydride colorless solid, 3 physical properties of lithium hydride commercial samples are grey. Characteristic of a salt-like ionic hydride, it has a high melting point, and it is not soluble but reactive with all organic and protic solvents.

It is soluble and nonreactive with certain molten salts such as lithium fluoridelithium borohydrideand sodium hydride. With a molecular mass of slightly less than 8. The thermal conductivity of LiH decreases with temperature 3 physical properties of lithium hydride depends on morphology: LiH is produced by treating lithium metal with hydrogen gas:.

Lithium hydride | HLi | ChemSpider

Chemical reactions yield LiH in the form of lumped powder, which can be compressed into pellets without a binder. More complex shapes can be produced by casting properties lithium the read article. They often have bluish color owing to the presence of colloidal Li.

3 physical properties of lithium hydride cold-pressed LiH parts can be easily machined using standard techniques 3 physical properties of lithium hydride tools to micrometer precision. However, cast LiH is brittle and easily cracks during processing. In moist air the powder ignites spontaneously, forming a mixture of products including some nitrogenous 3 physical properties of lithium hydride.

3 physical properties of lithium hydride

Click lump material reacts with humid air, forming a superficial coating, which is a viscous /pyridostigmine-dosage-myasthenia-gravis.html. This inhibits further reaction, although the appearance of a film of "tarnish" is quite evident.

Little or no nitride is 3 physical properties of lithium hydride on exposure to humid air. The surface condition of LiH, presence of oxides on the metal dish, etc.

Dry oxygen does not react with crystalline LiH unless heated strongly, when an almost explosive combustion 3 physical properties of lithium hydride. LiH is highly reactive toward water and other protic reagents: Physical is less reactive with water than Li and thus is a much less powerful reducing agent for water, alcohols, cefadroxil capsules 1000mg benefits other media containing reducible solutes.

3 physical properties of lithium hydride physical properties of lithium hydride is true for all the binary saline hydrides. LiH reacts with acetylene to form lithium carbide and hydrogen. With anhydrous organic acids, phenols 3 physical properties of lithium hydride acid anhydrides LiH reacts slowly, producing hydrogen gas and read article lithium salt of the acid.

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With water-containing acids, LiH reacts faster than with water. With physical properties hydrogen content in proportion to its mass three times that of NaH, LiH has properties lithium hydride hydrogen content of any hydride. LiH is periodically of interest for hydrogen storage, but applications have lithium hydride thwarted by its stability to decomposition.

3 physical properties of lithium hydride

The 3 physical properties of lithium hydride was once tested as a fuel component in 3 physical properties of lithium hydride model rocket.

LiH is not usually a hydride-reducing agent, except in the synthesis of hydrides of certain metalloids. For example, silane is produced in the reaction of lithium hydride and silicon tetrachloride by the Sundermeyer process:. Lithium hydride is used in the production hydride a variety of reagents for organic synthesissuch as lithium aluminium hydride LiAlH 4 and lithium borohydride LiBH 4.

Triethylborane reacts to give superhydride LiBHEt 3. Lithium hydride LiH read more sometimes a desirable material for the shielding of nuclear reactorswith the isotope lithium-7 Li-7and it can be fabricated by casting.

LITHIUM HYDRIDE

Lithium deuteride, in the form of lithium-7 zyprexa diabetes, is a good moderator for nuclear reactorsbecause deuterium H-2 has a lower neutron absorption cross-section than ordinary hydrogen H-1 does, and the cross-section for Li-7 is also low, decreasing the absorption of neutrons in a link. Lithium-7 is preferred for a moderator because it has a lower neutron capture cross-section, and it also forms less tritium H-3 under bombardment with neutrons.

The corresponding lithium-6 deuteride6 LiH, 3 physical properties of lithium hydride 6 LiD, 3 physical properties of lithium hydride the primary fusion fuel in thermonuclear weapons. In hydrogen warheads of the Teller—Ulam designa nuclear fission trigger explodes to heat and compress the lithium-6 deuteride, and to bombard the 6 LiD with neutrons to produce tritium in an exothermic reaction:

3 physical properties of lithium hydride

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