Is it the high solubility of salt water or the high solubility of carbonated water

Solubility of carbonates: For insoluble salts, acid saltsSolubilityGreater thanPositive salt

For example, Ca(HCO3)2 is easily soluble in water, while CaCO3 is poorly soluble in water. The carbonate bond ores in the surface layer are partially converted to Ca(HCO3)2 and dissolved by long-term erosion of CO2 and water.

Carbonates: ammonium and alkali metals.

Carbonates are easily soluble in water. Carbonates of other metals are insoluble in water.

For soluble carbonates, the corresponding bicarbonate has a relatively low solubility. For example, concentrated ammonia carbonate solution.

When CO2 is saturated, it can sink into the hall and laugh out NH4HCO3, which is dressed up to contain industrially produced ammonium carbonate.

The basis of fertilizers. The solubility anomaly is related to the formation of bimeric or multimeric chains by hydrogen bonds of HCO3- ions.

When the metal ion is in contact with the O2- ion in CO32-, the metal ion Mn+ polarizes the oxygen in CO32-medium (the dipole is opposite to the original dipole)—it is called reverse polarization, resulting in the weakening of the O2- and C4+ polarized by Mn+, the bond is weakened, and when the compound becomes hot, the positive ion.

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As a result, Mn+ captures the O2- ion in the middle part of CO32- to form MO, which completely ruptures CO32- and decomposes into CO2. The greater the polarization ability of metal ions, the stronger the reverse polarization ability, and the worse the thermal stability of carbonate.

Sodium carbonate, potassium carbonate and ammonium carbonate are soluble in water. Carbonate can be divided into three categories: normal salt M2CO3, acid salt MHC3 and basic carbonate M2(OH)2CO3 (M is metal). Carbonate ores that exist in nature include calcite, aragonite (aragonite), magnesite, dolomite, siderite, rhodochrosite, siderite, leuleadite, strontium carbonate ore and toxic barite.

Carbonates and acid carbonates (also known as bicarbonates) are mostly colorless. The carbonates of alkali metals and ammonium are easily soluble in water, while the carbonates of other metals are insoluble in water. Sodium bicarbonate is less soluble in water, and other acid carbonates are easily soluble in water.

Metal ion carbonates containing hydroxide groups are called basic salts and are double salts. The important ones are basic copper carbonate [CuCO3·Cu(OH)2], basic lead carbonate [2PBC3·PB(OH)2], etc., and azurite [Cu3(CO3)2(OH)2] and malachite [Cu2(OH)2CO3] existing in nature.

Carbonates can be divided into three categories: normal salt M2CO3, acid grinding salt MHCO3 and basic carbonate M2(OH)2CO3 (M is metal). Carbonate ores that exist in nature include calcite, aragonite (aragonite), magnesite, dolomite, siderite, rhodochrosite, siderite, leuleadite, strontium carbonate ore and toxic barite. Carbonates and acid carbonates (also known as bicarbonates) are mostly colorless.

The carbonates of alkali metals and ammonium are easily soluble in water, while the carbonates of other metals are insoluble in water. Sodium bicarbonate is less soluble in water, and other acid carbonates are easily soluble in water. Metal ion carbonates containing hydroxide groups are called basic salts and are double salts.

The important ones include basic copper carbonate [CuCO3·Cu(OH)2], basic lead carbonate [2PBCo3·PB(OH)2], and azurite [Cu3(CO3)2(OH)2] and malachite [Cu2(OH)2CO3] and malachite [Cu2(OH)2CO3] existing in nature.

What are the insoluble carbonates that are often tested in junior high school.

1) Carbonate: calcium carbonate, barium carbonate, magnesium carbonate, copper carbonate, silver carbonate lead jujube buried (2) Sulfate: barium sulfate, lead sulfate:

3) Hydroxide: Fe3+, Fe2+, Cu2+, Al3+, Mg2+ corresponding bases: (4) Halide:

silver chloride, silver bromide, silver iodide; (5) Thioleum olemate: calcium carbonate, barium carbonate: (6) Phosphate:

calcium phosphate tung, barium phosphate; (7) ferrous sulfide, zinc sulfide, copper sulfide, silver sulfide, mercury sulfide, etc.

For NaHCO3, due to the intermolecular hydrogen bond of dimeric form between -HoCO2 and another -HoCO2 in its crystal structure, a certain amount of energy needs to be consumed when H2O acts, and the solubility is smaller than that of Na2CO3.

Generally speaking, the solubility of normal salt is greater than that of acid salt, because -OH in acid salt can form hydrogen bonds with water, and it is more difficult to dissolve, so normal salt is easier to dissolve than acid salt.

Further analysis:

Take the same volume and the same concentration of Na2CO3 and NaHCO3, if both are 100ml.

Na2CO3 hydrolysis is done in two steps: CO3 H2O HCO3 OH

Due to the presence of weak acid roots, the product NaHCO3 is unstable and continues to be hydrolyzed, HCO3 H2O H2O CO2 OH

So comics, 100ml of completely hydrolyzed consumed water .

Whereas, NaHCO3 is completely hydrolyzed in just one step:

hco3~＋ h2o ≈co2＋h2o＋oh~

Consumption of water . Comparing the two reactions, it is clear that the amount of water consumed to produce a stable substance is much less than that of the formula, so Na2CO3 is more soluble.

Sodium bicarbonate can form hydrogen bonds, which affects dissolution.

Sodium bicarbonate: commonly known as baking soda. White bushes evoke tiny crystals.

It is an industrial chemical that gradually decomposes solids above 50 degrees to produce sodium carbonate, carbon dioxide and water, and completely decomposes at 27 degrees. Sodium bicarbonate is an acid salt formed after neutralization of strong alkali and weak acid, which is weakly alkaline when dissolved in water. This property allows it to be used as a leavening agent in the food production process.

Sodium bicarbonate will remain sodium carbonate after action, and too much use will make the finished product have an alkaline taste.

Sodium carbonate: also known as soda ash, classified as salt. Also known as soda or soda ash in international **.

It is an important organic chemical material, mainly used in the production of flat glass, glass products and ceramic glaze. It is also widely used in life washing, acid ruler Zheng Shen neutralization and food processing.

Generally, the solubility of acid salt is larger than that of normal salt because -OH in acid salt can form hydrogen bonds with water, so it is easier to dissolve; However, for NaHCO, due to the intermolecular hydrogen bond of dimeric form between -Hoco and another -Hoco in its crystal structure, a certain amount of energy needs to be consumed when HO acts, and the solubility is slightly smaller than that of NaHC.

Because the weak acid roots will continue to hydrolyze and this hydrolysis is reversible. But the reversible reaction is always weak. Therefore, it is necessary to memorize the weak acid ions.

Take the same volume and the same concentration of Na Co and NaHCO

If it's all 100ml,.

Na2CO3 hydrolysis is in two steps:

co₃ ＋h₂o ＝ hco₃ ＋oh~

Due to the presence of weak acid radicals, the product NaHCO3 is unstable and continues to be hydrolyzed.

hco₃~＋h₂o ≈h₂o＋co₂＋oh~

Therefore, 100ml, Yuzu consumes water completely hydrolyzed.

While NaHCO3 is completely hydrolyzed in just one step, HCOHCOo consumes water.

Comparing the two reactions, it is clear that the amount of water consumed to produce a stable substance is much less than that of the formula, so Na2CO3 is more soluble.

It can be seen that sodium carbonate is alkaline sodium bicarbonate.

The solubility of sodium carbonate is somewhat greater than that of sodium bicarbonate. The solubility of sodium carbonate is greater than 10g under standard conditions, which is soluble, and the solubility of sodium bicarbonate is less than 10g of Weiqin under standard conditions, and it is soluble.

Reason: -Hoco in the crystal structure of NaHC forms an intermolecular hydrogen bond of a dimer with another -HoCo, which consumes a certain amount of energy when HO acts, and the solubility is slightly smaller than that of Na Co.

Sodium bicarbonate can be converted to sodium carbonate:

NaHCO+NaOH==NAco+HCO=(Condition: Heating) NAco+CO+HC==2NAHCO (Condition: None).