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Salt is a pure substance, and generally only has a definite and unique chemical formula, such as the chemical formula of NaCl.
Only compound salts can be written in different compositional forms, e.g. kai(SO4)2·12H2O can be written as K2SO4·AL2(SO4)·12H2O. Hope it helps.
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1) Elemental metal + acid - salt + hydrogen (displacement reaction).
1. Zinc and dilute sulfuric acid reaction: Zn + H2SO4 === ZNSO4 + H2
2. Magnesium and dilute sulfuric acid reaction: mg + H2SO4 === MGSO4 + H2
3. Reaction of aluminum and dilute sulfuric acid: 2AL + 3H2SO4 === AL2(SO4)3 + 3H2
4. Zinc and dilute hydrochloric acid reaction: Zn + 2HCl === ZNCL2 + H2
5. Magnesium and dilute hydrochloric acid reaction: mg+ 2HCl === mgCl2 + H2
6. Reaction of aluminum and dilute hydrochloric acid: 2AL + 6HCl === 2ALCL3 + 3H2
Metathesis reaction:
1) Basic oxide acid salt H2O
fe2o3+6hcl==2fecl3+3h2o
fe2o3+3h2so4==fe2(so4)3+3h2o
cuo+h2so4==cuso4+h2o
zno+2hno3==zn(no3)3+h2o
2) Alkaline acid salt H2O
cu(oh)2+2hcl==cucl2+2h2o
cu(oh)2+h2so4==cuso4+2h2o
naoh+hcl==nacl+h2o
2naoh+h2so4==na2so4+2h2o
naoh+hno3==nano3+h2o
mg(oh)2+2hno3==mg(no3)2+2h2o
ba(oh)2+h2so4==baso4↓+2h2o
3) Acid salt, new salt, new acid.
caco3+2hcl==cacl2+h2o+co2↑
na2co3+2hcl==2nacl+h2o+co2↑
hcl+agno3==agcl↓+hno3
h2so4+bacl2==baso4↓+2hcl
ba(no3)2+h2so4==baso4↓+2hno3
nahco3+hcl==nacl+h2o+co2↑
4) Salt 1 Salt 2 New Salt 1 New Salt 2
kcl+agno3==agcl↓+kno3
nacl+agno3==agcl↓+nano3
na2so4+bacl2==baso4↓+2nacl
bacl2+2agno3==2agcl↓+ba(no3)2
5) Saline, alkali, new salt, neoalkali.
cuso4+2naoh==cu(oh)2↓+na2so4
fecl3+3naoh==fe(oh)3↓+3nacl
ca(oh)2+na2co3==caco3↓+2naoh
naoh+nh4cl==nacl+nh3↑+h2o
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The chemical formula of table salt is NaCl. NaCl is the main component of table salt, an ionic compound. Table salt is one of the most important substances for human survival and the most commonly used seasoning in cooking.
Pure sodium chloride crystals are colorless and transparent cubic crystals, and due to the presence of impurities, sodium chloride is generally white cubic crystals or fine crystal powders.
How to store table salt:Put it in a sealed plastic bag and then place it in a dry and ventilated place.
Salt cannot be placed in metal containers, because the main component of salt is sodium chloride, and sodium chloride is easy to react with metal and corrode metal containers, which will also reduce the edible value of table salt, or even become inedible.
The above content reference: Encyclopedia - table salt.
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The chemical formula of the salt.
1. Chloride salts: NaCl, KCL, CaCl, MgCl, Zncl, FeCl, FeCl, CuCl, AGCL, BACL, NH Cl, AlCl
2. Sulfate.
na₂so₄、k₂so₄、mgso₄、caso₄、znso₄、cuso₄、feso₄、fe₂(so₄)₃baso₄、al₂(so₄)₃
3. Carbonates: NA CO, NAHCO, CACO, CA(HCO) CUCO, FECO (SIDERITE), NH HCO
4. Nitrate.
nano₃、mg(no₃)₂al(no₃)₃fe(no₃)₂fe(no₃)₃cu(no3)₂、agno₃、nh₄no₃
5. Ammonium salts: NH Cl, NH HCO, NH NO
Sodium chloride. Sodium chloride is an inorganic ionic compound of Jane Qin, with the chemical formula NaCl, colorless cubic crystals or fine crystalline powders, and is salty. The appearance is white crystalline, and its ** is mainly seawater, which is the main component of table salt. Soluble in water, glycerol.
Slightly soluble in ethanol.
alcohol), liquid ammonia; Insoluble in concentrated hydrochloric acid.
Impure sodium chloride is deliquescent in air transport.
The stability is relatively good, its aqueous solution is neutral, and the electrolytic saturated beam sodium chloride solution is generally used in the industry.
methods to produce hydrogen, chlorine and caustic soda (sodium hydroxide.
and other chemical products (generally known as chlor-alkali industry) can also be used in ore smelting (electrolytic molten sodium chloride crystals to produce active metal sodium, medically used to prepare normal saline, and used in condiments.
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The chemical formula of salt is: NaCl.
Common salts in daily life include table salt (NAC1), soda ash (NACO), baking soda (sodium thiosulfate) and other baking soda (NAHCO), and agricultural fertilizers such as ammonium nitrate (NHNO), ammonium bicarbonate (NHCO), K2SO4, etc.
Salts are usually hydrophilic, and the cations and anions in the salts are dissolved in water by being surrounded by water molecules, respectively.
Solubility of salt
Many ionic compounds can be dissolved in water or similar solvents, and the solubility of the compounds is related to the composition of anions and cations, as well as the solvent, so there is a specific relationship. Among the cations, all salts of sodium, potassium and ammonium are soluble in water; Among the anions, the salts of nitrate ions and bicarbonate ions can be dissolved in water.
In addition to barium sulfate, calcium sulfate and lead sulfate, most of the salts of sulfate ions are also soluble in water. However, if the bonds between ions are strong and produce highly stable solids, they are not easily soluble in water, for example, most carbonates are insoluble in water, such as lead carbonate and barium carbonate.
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Common salts are divided into normal salts (such as sodium chloride, aluminum sulfate, silver nitrate, etc.), acid salts (such as sodium bicarbonate, potassium dihydrogen phosphate, etc.) and basic salts (such as basic copper carbonate).
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