Lithium sulfate solubility. Lithium Sulfate Composition and Molar Mass
lithium sulfate- alkali metal salt of lithium and sulfuric acid. Chemical formula Li 2 SO 4 . Forms Li 2 SO 4 H 2 O crystalline hydrate.
Receipt
- Lithium sulfate crystalline hydrate is obtained by reacting lithium hydroxide or carbonate with sulfuric acid, followed by evaporation:
texvc not found; See math/README for setup help.): \mathsf(2 \ LiOH + H_2SO_4 \ \xrightarrow(\ )\ Li_2SO_4 + 2 \ H_2O )
- Anhydrous salt is obtained by heating the monohydrate above 500°C.
Physical Properties
Anhydrous lithium sulfate forms three crystalline modifications:
- α-form - stable modification under normal conditions with a monoclinic lattice, space group P 2 1 /c, parameters a= 0.844 nm, b= 0.495 nm, c= 0.824 nm, β = 107.9°, Z = 4.
- β-form - hexagonal lattice
- γ-form - at temperatures above 575 ° C forms a cubic lattice, space group I 43m, a= 0.707 nm, Z = 4.
The crystalline hydrate forms crystals of the monoclinic system, space group P 2 1 , parameters a= 0.814 nm, b= 0.483 nm, c= 0.543 nm, β = 107.58°, Z = 4.
Chemical properties
- Reacts with sulfuric acid to form lithium hydrogen sulfate:
texvc not found; See math/README for setup help.): \mathsf(Li_2SO_4 + H_2SO_4 \ \xrightarrow(\ )\ 2 \ LiHSO_4 )
- Interaction with barium compounds is convenient to obtain various lithium compounds:
texvc not found; See math/README for setup help.): \mathsf(Li_2SO_4 + Ba(OH)_2 \ \xrightarrow(\ )\ 2 \ LiOH + BaSO_4\downarrow )
Unable to parse expression (executable file texvc not found; See math/README for setup help.): \mathsf(Li_2SO_4 + Ba(N_3)_2 \ \xrightarrow(\ )\ 2 \ LiN_3 + BaSO_4\downarrow )
- When heated with hydrogen, ammonia or carbon (coke) is reduced to lithium sulfide:
texvc not found; See math/README for setup help.): \mathsf(Li_2SO_4 + 4 \ C \ \xrightarrow(800^oC)\ Li_2S + 4 \ CO )
Application
Lithium sulfate is used to make detector heads in ultrasonic flaw detection and as a component of phosphors. It is also used as a treatment for manic-depressive psychosis. This substance is a piezoelectric.
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Literature
- Patnaik, P. Handbook of Inorganic Chemicals. - McGraw-Hill, 2003. - 1086 p. - ISBN 0-07-049439-8.
- Tom Jackson.. - Marshall Cavendish, 2006. - P. 13. - 32 p. - ISBN 0761421998.
| Chemical vessels | This article about inorganic matter is a stub. You can help the project by adding to it. |
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lithium sulfate- alkali metal salt of lithium and sulfuric acid. Chemical formula Li 2 SO 4 . Forms Li 2 SO 4 H 2 O crystalline hydrate.
Receipt
- Lithium sulfate crystalline hydrate is obtained by reacting lithium hydroxide or carbonate with sulfuric acid, followed by evaporation:
- Anhydrous salt is obtained by heating the monohydrate above 500°C.
Physical Properties
Anhydrous lithium sulfate forms three crystalline modifications:
- α-form - stable modification under normal conditions with a monoclinic lattice, space group P 2 1 /c, parameters a= 0.844 nm, b= 0.495 nm, c= 0.824 nm, β = 107.9°, Z = 4.
- β-form - hexagonal lattice
- γ-form - at temperatures above 575 ° C forms a cubic lattice, space group I 43m, a= 0.707 nm, Z = 4.
The crystalline hydrate forms crystals of the monoclinic system, space group P 2 1 , parameters a= 0.814 nm, b= 0.483 nm, c= 0.543 nm, β = 107.58°, Z = 4.
Chemical properties
- Reacts with sulfuric acid to form lithium hydrogen sulfate:
- Interaction with barium compounds is convenient to obtain various lithium compounds:
- When heated with hydrogen, ammonia or carbon (coke) is reduced to lithium sulfide:
Application
Lithium sulfate is used to make detector heads in ultrasonic flaw detection and as a component of phosphors. It is also used as a treatment for manic-depressive psychosis. This substance is a piezoelectric.
Write a review on the article "Lithium sulfate"
Literature
- Patnaik, P. Handbook of Inorganic Chemicals. - McGraw-Hill, 2003. - 1086 p. - ISBN 0-07-049439-8.
- Tom Jackson.. - Marshall Cavendish, 2006. - P. 13. - 32 p. - ISBN 0761421998.
| This article about inorganic matter is a stub. You can help the project by adding to it. |
An excerpt characterizing lithium sulfate
“Those people who sacrificed everything for him,” the princess picked up, trying to get up again, but the prince did not let her in, “which he never knew how to appreciate. No, mon cousin,” she added with a sigh, “I will remember that in this world no reward can be expected, that in this world there is neither honor nor justice. In this world, one must be cunning and evil.- Well, voyons, [listen,] calm down; I know your beautiful heart.
No, I have a bad heart.
“I know your heart,” the prince repeated, “I appreciate your friendship and would like you to have the same opinion about me.” Calm down and parlons raison, [let's talk plainly,] while there is time - maybe a day, maybe an hour; tell me everything you know about the will, and, most importantly, where it is: you must know. We'll take it now and show it to the count. He probably forgot about him already and wants to destroy him. You understand that my one desire is to sacredly fulfill his will; I then just came here. I'm only here to help him and you.
“Now I understand everything. I know whose intrigues it is. I know, - said the princess.
“That is not the point, my soul.
- This is your protegee, [favorite,] your dear Princess Drubetskaya, Anna Mikhailovna, whom I would not want to have a maid, this vile, vile woman.
– Ne perdons point de temps. [Let's not waste time.]
- Oh, don't talk! Last winter she rubbed herself in here and said such nasty things, such nasty things to the count about all of us, especially Sophie - I can’t repeat it - that the count became ill and did not want to see us for two weeks. At this time, I know that he wrote this nasty, vile paper; but I thought this paper meant nothing.
– Nous y voila, [That's the point.] Why didn't you tell me before?
“In the mosaic briefcase he keeps under his pillow. Now I know,” said the princess, without answering. “Yes, if there is a sin for me, a big sin, then it is hatred for this bastard,” the princess almost shouted, completely changed. “And why is she rubbing herself here?” But I will tell her everything, everything. The time will come!
While such conversations were taking place in the reception room and in the princess's rooms, the carriage with Pierre (who was sent for) and Anna Mikhailovna (who found it necessary to go with him) drove into the courtyard of Count Bezukhoy. When the wheels of the carriage sounded softly on the straw laid under the windows, Anna Mikhailovna, turning to her companion with comforting words, convinced herself that he was sleeping in the corner of the carriage, and woke him up. Waking up, Pierre got out of the carriage after Anna Mikhailovna, and then only thought of that meeting with his dying father that awaited him. He noticed that they did not drive up to the front, but to the back entrance. While he was getting off the footboard, two men in bourgeois clothes hurriedly ran away from the entrance into the shadow of the wall. Pausing, Pierre saw in the shadow of the house on both sides several more of the same people. But neither Anna Mikhailovna, nor the footman, nor the coachman, who could not but see these people, paid no attention to them. Therefore, this is so necessary, Pierre decided with himself, and followed Anna Mikhailovna. Anna Mikhailovna walked with hasty steps up the dimly lit narrow stone stairs, calling Pierre, who was lagging behind her, who, although he did not understand why he had to go to the count at all, and still less why he had to go along the back stairs, but , judging by the confidence and haste of Anna Mikhailovna, he decided to himself that this was necessary. Halfway down the stairs they were almost knocked down by some people with buckets, who, clattering with their boots, ran towards them. These people pressed against the wall to let Pierre and Anna Mikhailovna through, and did not show the slightest surprise at the sight of them.
- Are there half princesses here? Anna Mikhailovna asked one of them...
“Here,” the footman answered in a bold, loud voice, as if everything was already possible now, “the door is on the left, mother.”
“Perhaps the count did not call me,” said Pierre, while he went out onto the platform, “I would have gone to my place.
Anna Mikhailovna stopped to catch up with Pierre.
Ah, mon ami! - she said with the same gesture as in the morning with her son, touching his hand: - croyez, que je souffre autant, que vous, mais soyez homme. [Believe me, I suffer no less than you, but be a man.]
- Right, I'll go? asked Pierre, looking affectionately through his spectacles at Anna Mikhailovna.
- Ah, mon ami, oubliez les torts qu "on a pu avoir envers vous, pensez que c" est votre pere ... peut etre a l "agonie." She sighed. - Je vous ai tout de suite aime comme mon fils. Fiez vous a moi, Pierre. Je n "oublirai pas vos interets. [Forget, my friend, what was wrong against you. Remember that this is your father... Maybe in agony. I immediately fell in love with you like a son. Trust me, Pierre. I will not forget your interests.]
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Chemical formula
Molar mass of Li 2 SO 4 , lithium sulfate 109.9446 g/mol
6.941 2+32.065+15.9994 4
Mass fractions of elements in the compound
Using the Molar Mass Calculator
- Chemical formulas must be entered case sensitive
- Indexes are entered as regular numbers
- The dot on the midline (multiplication sign), used, for example, in the formulas of crystalline hydrates, is replaced by a regular dot.
- Example: instead of CuSO₄ 5H₂O in the converter, the spelling is used for ease of entry CuSO4.5H2O.
Molar mass calculator
mole
All substances are made up of atoms and molecules. In chemistry, it is important to accurately measure the mass of substances entering into a reaction and resulting from it. By definition, the mole is the SI unit for the amount of a substance. One mole contains exactly 6.02214076×10²³ elementary particles. This value is numerically equal to the Avogadro constant N A when expressed in units of moles⁻¹ and is called Avogadro's number. Amount of substance (symbol n) of a system is a measure of the number of structural elements. A structural element can be an atom, a molecule, an ion, an electron, or any particle or group of particles.
Avogadro's constant N A = 6.02214076×10²³ mol⁻¹. Avogadro's number is 6.02214076×10²³.
In other words, a mole is the amount of a substance equal in mass to the sum of the atomic masses of the atoms and molecules of the substance, multiplied by the Avogadro number. The mole is one of the seven basic units of the SI system and is denoted by the mole. Since the name of the unit and its symbol are the same, it should be noted that the symbol is not declined, unlike the name of the unit, which can be declined according to the usual rules of the Russian language. One mole of pure carbon-12 equals exactly 12 grams.
Molar mass
Molar mass is a physical property of a substance, defined as the ratio of the mass of that substance to the amount of the substance in moles. In other words, it is the mass of one mole of a substance. In the SI system, the unit of molar mass is kilogram/mol (kg/mol). However, chemists are accustomed to using the more convenient unit g/mol.
molar mass = g/mol
Molar mass of elements and compounds
Compounds are substances made up of different atoms that are chemically bonded to each other. For example, the following substances, which can be found in the kitchen of any housewife, are chemical compounds:
The molar mass of chemical elements in grams per mole is numerically the same as the mass of the element's atoms expressed in atomic mass units (or daltons). The molar mass of compounds is equal to the sum of the molar masses of the elements that make up the compound, taking into account the number of atoms in the compound. For example, the molar mass of water (H₂O) is approximately 1 × 2 + 16 = 18 g/mol.
Molecular mass
Molecular weight (the old name is molecular weight) is the mass of a molecule, calculated as the sum of the masses of each atom that makes up the molecule, multiplied by the number of atoms in this molecule. The molecular weight is dimensionless a physical quantity numerically equal to the molar mass. That is, the molecular weight differs from the molar mass in dimension. Although the molecular mass is a dimensionless quantity, it still has a value called the atomic mass unit (amu) or dalton (Da), and is approximately equal to the mass of one proton or neutron. The atomic mass unit is also numerically equal to 1 g/mol.
Molar mass calculation
The molar mass is calculated as follows:
- determine the atomic masses of the elements according to the periodic table;
- determine the number of atoms of each element in the compound formula;
- determine the molar mass by adding the atomic masses of the elements included in the compound, multiplied by their number.
For example, let's calculate the molar mass of acetic acid
It consists of:
- two carbon atoms
- four hydrogen atoms
- two oxygen atoms
- carbon C = 2 × 12.0107 g/mol = 24.0214 g/mol
- hydrogen H = 4 × 1.00794 g/mol = 4.03176 g/mol
- oxygen O = 2 × 15.9994 g/mol = 31.9988 g/mol
- molar mass = 24.0214 + 4.03176 + 31.9988 = 60.05196 g/mol
Our calculator does just that. You can enter the formula of acetic acid into it and check what happens.
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