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al₂(so₄)₃6nahco₃==3na₂so₄+2al(oh)₃↓6co₂↑
Stable at room temperature, sodium bicarbonate is easy to decompose when heated, decomposes rapidly above 50, completely loses carbon dioxide at 270, has no change in dry air, and slowly decomposes in humid air.
It can react with both acids and bases. It reacts with acids to form salts, water, and carbon dioxide, and with alkalis to produce carbonates and water. In addition, it can also react with certain salts to double hydrolyze with aluminum chloride and aluminum chlorate to produce aluminum hydroxide, sodium salt and carbon dioxide.
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Aluminum sulfate and sodium bicarbonate are two more common chemicals, and aluminum sulfate and sodium bicarbonate can be soluble in water, aluminum sulfate and sodium bicarbonate aqueous solutions are also commonly used in chemical tests, and aluminum sulfate and sodium bicarbonate can react.
Aluminum sulfate is a white crystal or powder, aluminum sulfate is odorless, can be used in artificial gemstones and used in papermaking and drinking water wastewater treatment and other industries, the use is very wide, aluminum sulfate can be soluble in water, but insoluble in ethanol.
Sodium bicarbonate, also known as baking soda, is also a small white crystal, is a more commonly used industrial chemical, sodium bicarbonate is odorless, non-toxic, has a salty taste, sodium bicarbonate can be soluble in water, can also be slightly soluble in ethanol.
Aluminum sulfate and sodium bicarbonate can react, and this reaction is called double hydrolysis reaction, that is, weak acid anions and weak base cations promote hydrolysis with each other.
The chemical equation for the reaction of aluminum sulfate with sodium bicarbonate solution is given below:
Double Hydrolysis Reaction:
Al2(SO4)3+6NaHCO3=2AL(OH)3 (precipitate) + 6CO2 (gas) + 3Na2SO4
Sodium hydroxide: sodium hydroxide, inorganic compound, chemical formula NaOH, also known as caustic soda, caustic soda, solid soda, caustic soda, caustic soda. Sodium hydroxide has strong alkalinity and strong corrosiveness, and can be used as acid neutralizer, masking agent, precipitant, precipitation masking agent, chromogenic agent, saponifying agent, peeling agent, detergent, etc., and is widely used.
There are two methods for industrial production of sodium hydroxide: causticizing and electrolysis. The causticizing method is divided into soda ash causticizing method and trona causticizing method according to different raw materials; The electrolysis method can be divided into the separator electrolysis method and the ion exchange membrane method.
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Agree. It should be added that this is a dihydrolytic reaction.
Al3+ +3H2O = Al(OH)3 + 3H+HCO3 + H2O = H2CO3 + OH- The combined is: Al2(SO4)3+6NaHCO3==3Na2SO4+2Al(OH)3 +6CO2
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Aluminum sulfate andSodium bicarbonateThe solution is mixed together, and the cavity produces a large amount of this cavityCarbon dioxideGas. The ionic equation is Al3++3HCO3-=Al(OH)3 +3CO2.
Aluminum sulfate and sodium bicarbonate can react, and this reaction is called double hydrolysis reaction.
That is, it refers to the weak acid anion.
and weak base cations promote hydrolysis with each other. The chemical equation of the reaction.
As follows: Al2(SO4)3+6NaHCO3=2Al(OH)3 +6CO2(gas) +3Na2SO4.
Common double hydrolysis equations1. Aluminum ions and carbonate ions.
2Al3++3CO32-+3H2O=2Al(OH)3 +3CO2 2, aluminum ion and sulfur ion.
2Al3++3S2-+6H2O=2Al(OH)3 +3H2S3, aluminum ion and hydroxide ion.
Al3++3Hs-+3H2O=Al(OH)3 +3H2S 4, iron ions.
and tetrahydroxyaluminate ions.
fe3++3(al(oh)4)-=fe(oh)3↓+3al(oh)3↓
5. Iron ions and carbonate ions.
2Fe3++3CO32-+3H2O=2Fe(OH)3 +3CO2 The above contents refer to Encyclopedia--Double hydrolysis.
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Aluminum sulfate andSodium bicarbonateThe ionic equation of the reaction is Al3++3HCO3-==Al(OH)3 +3CO2.
Aluminum sulfate is an inorganic substance, the chemical formula is Al2 (SO4)3, the molecular weight is, it is a white crystalline anti-Hu powder, in the paper industry as a precipitant for rosin gum, wax emulsion and other rubber materials, as a flocculant in water treatment, and can also be used as a foam fire extinguisher.
of the inner retaining agent, the manufacture of alum.
Raw materials for aluminum white, petroleum decolorization, deodorant, raw materials for drugs, etc.
Aluminum sulphate is mainly used.
1. It is used as a paper sizing agent in the paper industry to enhance the water resistance and anti-seepage performance of the paper;
2. After being dissolved in water, the fine particles and natural colloidal particles in the water can be condensed into large flocculents, which can be removed from the water, so they are used as coagulants for water supply and wastewater;
3. It is used as a turbid water purification agent, and also used as a precipitant, fixing agent, filler, etc. used as a perspirant cosmetic raw material (astringent) in cosmetics;
4. In the fire industry, with baking soda.
The foaming agent is composed of foam fire extinguishing agent;
5. Analytical reagents, mordants, tanning agents, mountain mill grease decolorizing agents, wood anti-taking and only anti-corrosion agents.
The above content reference: Encyclopedia - Aluminum sulfate.
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The chemical reaction of aluminum sulfate and sodium bicarbonate can be shown by the following equation:
al2(so4)3 + 2nahco3 → 2al(oh)3 + 3co2↑ +na2so4
In this equation, aluminum sulfate (Al2(SO4)3) and sodium bicarbonate (NaHCO3) are the reactants, producing aluminum hydroxide (Al(OH)3), carbon dioxide (CO2), and sodium sulfate (Na2SO4) as products.
This reaction is a double displacement reaction in which the hydroxide (HCO3-) ions in sodium bicarbonate exchange positions with the sulfate (SO42-) ions in aluminum sulfate to form several new compounds. Aluminum hydroxide is formed by hydrolysis of aluminum sulfate, while carbon dioxide is formed by the separation of carbonate and hydroxide in sodium bicarbonate.
This reaction has several industrial and laboratory applications, such as for the preparation of aluminum hydroxide, or as a method for making CO2 gas in experiments.
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Ion equation: 2Al3Co3HO=2Al(OH) 3Co
The chemical equation potato cavity: Al(SO) 3NA CO +3H O=2AL(OH) 3NA SO +3CO
This is one of the methods for the preparation of aluminum hydroxide, namely the ammonium bicarbonate method
In the aluminum sulfate solution, the alkali solution is added under stirring to generate a precipitate that is washed, filtered, and dried at low temperature, and then crushed to obtain the finished product. The dehydrated paste can also be used directly as a product.
The concentration, temperature, reaction temperature control, and drying temperature of the solution in preparation will affect the product quality. The ammonium bicarbonate method reacts sulfuric acid with aluminum powder or aluminum ash to generate aluminum sulfate, and then metacomposes with ammonium bicarbonate to obtain aluminum hydroxide.
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Aluminum bicarbonate reacts with sulfuric acid to produce aluminum bisulfate and carbon dioxide gas. The reaction equation is as follows:
Al(HCO3)3 + H2SO4 AL(HSO4)3 + CO2 where Al(HCO3)3 represents aluminum bicarbonate, H2SO4 represents sulfuric acid, Al(HSO4)3 represents aluminum bisulfate, and CO2 represents carbon dioxide.
This is a chemical equation that describes the chemical change between reactants and products. In this reaction, aluminum bicarbonate and sulfuric acid react to produce aluminum hydrogen and carbon dioxide before sulfuric acid. Note that the chemical formula in the equation needs to be balanced to ensure that the number of atoms remains consistent before and after the reaction.
The most suitable one must be b!Because the stomach medicine mentioned here refers to ** excessive stomach acid. Whereas, the component of stomach acid is mainly hydrochloric acid. >>>More
Known: ka1=, ka2=, sodium bicarbonate for carbonic acid.
pH = , RT, 25° then KW = 10 -14 then you can find KB1 = KW Ka2 , KB2 = KW KA1 According to the calculation of multiple weak bases, the sodium bicarbonate concentration of pH = is deduced from sodium bicarbonate PH=>PH= is relatively close, and it is calculated according to the substitution for comparison, KB2 * C is close to KB2 * 20 kW, so KB2 * C >> KB1 KB2 >100, and c kb1 is close, so c kb1 > 500 To sum up: kb2 * c >>20 kw, kb1 kb2>100, c kb1 > 500, meet the requirements of the simplified formula so, [oh-] 0 5 = kb1 * c seems to be wrong You take a look first The method is almost like this, first compare kb2 * c >>20 kw, kb1 kb2>100, c kb1 > 500 >>>More
Excess calcium hydroxide produces calcium carbonate and sodium hydroxide, and the hydroxide in the aqueous solution comes from calcium hydroxide, and when the calcium hydroxide is in small amounts, the hydroxide in the solution comes from the hydroxide generated by the hydrolysis of carbonate. If the concentration of sodium bicarbonate is n, and the volume change of the solution before and after the reaction is not counted, then when calcium hydroxide is excessive, the concentration of hydroxide is n, and when calcium hydroxide is small, the concentration of hydroxide is less than n, because carbonate cannot be completely hydrolyzed, and its two-step hydrolysis is very small. So in these two solutions, hydroxide is more in (1).
2.Preparation method:
1) Laboratory method: >>>More
Go to a certain sample.
After dissolving, excess hydrochloric acid is added to collect the gas produced to calculate the mol amount. >>>More