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Anonymous users2024-02-09Write the chemical equation first, then the ionic reaction.
k2s = cus↓ +k2so4;cu2+ +s2- = cus↓
2hac = ca(ac)2 + co2↑ +h2o;caco3 + 2hac = ca2+ +2ac- +co2↑ +h2o
2hcl = cacl2 + 2co2↑ +2h2o;hco3- +h+ = co2↑ +h2o
nh4+ = nh3·h2o =△=nh3↑ +h2o
2nh4hco3 =△= caco3↓ +2nh3↑ +2h2o;ca2+ +2oh- +2nh4+ +2hco3- =△= caco3↓ +2nh3↑ +2h2o
h2so4 = baso4↓ +2h2o;ba2+ +2oh- +2h+ +so42- = baso4↓ +2h2o
hcl = nahco3 + nacl;co3 2- +h+ = hco3-
co2 + h2o = caco3↓ +2hclo;ca2+ +2clo- +co2 + h2o = caco3↓ +2hclo
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Anonymous users2024-02-081. The following equation: silver nitrate and hydrochloric acid and soluble hydrochloride solution: ag++cl-=agcl.
Sodium reaction with water: 2Na + 2H2O = 2Na + + 2OH + H2. Sodium vs. copper sulfate solution:
2na+2h2o+cu2+=2na++cu(oh)2↓+h2↑。
2. Sodium peroxide reacts with water: 2Na2O+2H2O=4Na++4OH+O2. Bicarbonate solution mixed with strong acid solution:
hco3-+h+=co2↑+h2o。The bicarbonate solution is mixed with the acetic acid solution: HCO3-+CH3COOH=CO2 +H2O+CH3COO-.
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Anonymous users2024-02-07Potassium aluminum sulfate [KAL(SO4)2].
Potassium aluminum sulfate is a compound composed of two different metal ions and an acid ion, which can ionize in water to produce two metal cations and sulfate anions.
kal（so4）2=k+
al3+2so42-
Potassium aluminum sulfate dodecahydrate [KAL (SO4)2*12H20] is commonly known as alum. Alum is a colorless crystal that is soluble in water and is formed in natural water.
Al(OH)3 (colloid), Al(OH)3 can form flocculent insoluble matter with the sediment suspended in the water and settle down to make the water clear, so alum can be used as clean water. Dose.
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Anonymous users2024-02-06Alum (potassium aluminum sulfate crystals) dissolved in water can ionize aluminum ions, aluminum ions are easily hydrolyzed, forming aluminum hydroxide colloid, (colloids are dispersed particles with a radius between the solution and the precipitation, there is a Tyndall effect) This colloid is generally positively charged, because of the repulsion between them, so it is relatively stable. This stability is broken when there are negatively charged impurities. The colloids adsorb impurities and precipitate.
Alum dissolves in water to ionize aluminum ions, which are easily hydrolyzed to generate aluminum hydroxide colloid, which has adsorption, can adsorb impurities, and precipitate down to achieve the purpose of removing impurities. That's how it works!
Alum dissolves in water into colloids, combines with impurities and predescribs, which belongs to physical changes, how can there be a reaction equation.
Alum dissolves in water to ionize aluminum ions, which are easily hydrolyzed to generate aluminum hydroxide colloid, which has adsorption, can adsorb impurities, and precipitate down to achieve the purpose of removing impurities. That's how it works!
Alum dissolves in water into colloids, combines with impurities and predescribs, which belongs to physical changes, how can there be a reaction equation.
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Anonymous users2024-02-05An ionic reaction is a reaction in which ions participate. Refers to the exchange of electrons between ions in the form of a substance (or ions and solids) such as.
Or the ions are recombined into a new substance. Such as metathesis reactions.
I'm a chemistry teacher in my first year of high school, so what's the use of giving you all the ion equations? The key to science is to understand, just take a good look at the steps of writing the ion equation in the book and digest it. Just pay attention to what should be dismantled and what can't be dismantled, and the ion equation is not too difficult to learn.
1)al3++
Aluminum hydroxide is insoluble in weak bases. >>>More
Hey, I don't even want to write about it, didn't you learn all this in the academy?
The chemical equation refers to the fact that a chemical reaction follows the conservation of mass. >>>More
Chemical equationsWrittenIonic equationsProcess: >>>More