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Anonymous users2024-02-05The acidity of oxidic acid is strengthened with the increase of the oxidation state of acid-forming elements. Perchloric acid is the most acidic inorganic acid among non-metallic oxygenated acids, chloric acid is a strong acid, chlorous acid is a moderately strong acid, hypochlorous acid is a weak acid, and its acid strength is equivalent to Ka1 of H2S.
1. If the same acid-forming element can form several oxygenated acids in different oxidation states, its acidity will increase according to the increase of oxidation number; For example, hclo4, hclo3, hclo2, hclo
2.In the same main group, the acidity of the acid-forming elements in the same oxidation state increases with the atomic number and weakens from top to bottom. For example, hclo hbro hio, hclo2 hbro2 hio2, hclo3 hbro3 hio3, hclo4 hbro4 hio4
3.In the same cycle, the acidity of the acid-forming elements in the highest oxidation state increases with the atomic number, from left to right.
According to the experimental facts, the oxygenated acids of halogens are all strong oxidants, but the order of oxidation is not necessarily that the higher the oxidation state of the acid-forming elements, the stronger the oxidation. So far, it is difficult to fully explain the strength of its oxidation, but most of the phenomena can be explained in terms of standard electrode potential or chemical reaction speed. The standard electrode potential of halogen reaction can be found in Figure 1-10.
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Anonymous users2024-02-04Oxytic acids do not.
Although some substances are not acids, they are more acidic than him, such as 2,4,6-trinitrophenol, which is a phenolic nitro compound, strongly acidic, stronger than perchloric acid, and many organic acids are very acidic.
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Anonymous users2024-02-03There will definitely be, there will be examples, and I can't say anything about them without data.
He is only the strongest of the most ** oxygenated acids of the elements.
University Inorganic Chemistry will introduce strong acids such as superacid, magic acid, etc.
What's going on on the first floor, how can phenols be strong acids, even if the influence of the electron effect is great, it is not completely ionized.
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Anonymous users2024-02-02Yes, perchloric acid is the strongest acid and the strongest of all acids.
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Anonymous users2024-02-01HCO4 is a chlorine oxygenated acid with the chemical name of:Perchloric acid。It is also known as hydroxychlorine trioxide. The acid content ranges from 50-72% and is a clear, colorless, odorless aqueous solution.
It is corrosive to metals and tissues. When a closed container is exposed to heat for a long time, it may break violently.
Perchloric acid is a super acid.
Its PKA is below -9, as evidenced by the fact that its monohydrate has discrete hydronium ions and is separated by a posture defect into a crystalline and stable solid in the form of [H3O+][ClO4]. Because perchlorate is weakly nucleophilic (describing the high acidity of HCO4), it also provides strong acidity with little interference.
HCO4 applications.
The main application of perchloric acid is as a precursor to ammonium perchlorate, an inorganic compound.
It's rocket fuel.
important ingredient. As a result, perchloric acid is considered to be a more critical compound in the aerospace industry. The same compounds can also be used in liquid crystal displays.
LCD) system.
Perchloric acid has also begun to be widely used in the electronics industry. Due to its unique properties, the compound bond can also be used in analytical chemistry.
Perchloric acid also has many important applications in extracting material from ores. In addition, this particular compound is also used for chromium etching. Because it acts as a super acid, perchloric acid is considered to be one of the strong acids.
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Anonymous users2024-01-31Hypochlorous acid, chlorous acid, chloric acid, and perchloric acid are read in turn.
The oxidation of chlorine oxygenated acid is that the lower the valence state, the higher the oxidation. And acidity is just the opposite, the acidity is hclo4 hclo3 hclo2 hclo
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Anonymous users2024-01-30NH4+ is strongerCH3COOH) is a weak acid weaker than acetic acid.
The hydrocarbon group is an electron-donor group, which will weaken the acidity when attached to the carboxyl group, and the larger the hydrocarbon group, the weaker the acidity. So propionic acid is weaker than acetic acid (acetic acid)!
The ionization constant of acetic acid is basically the same as that of ammonia monohydrate, ammonium chloride.
The hydrolysis constant is equal to kw divided by the ionization constant of ammonia monohydrate, and since the ionization constant of acetic acid is 10 -5, it is concluded that in general, the degree of ionization is greater than the degree of hydrolysis. At the same concentration, the acidity of acetic acid is stronger than that of ammonium chloride solution. In addition, the same concentration of acetic acid and sodium acetate.
The mixed solution is acidic and dusty, with the same concentration of ammonia.
The mixed solution with ammonium chloride is alkaline, which is also consistent with the fact that ionization is greater than hydrolysis.
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Anonymous users2024-01-291.Common strong acids.
HCl (hydrochloric acid), H2SO4 (sulfuric acid), Hno3 (nitric acid), HBR (hydrobromic acid), HI (hydroiodic acid).
2.Common weak acids: H2CO3 (carbonic acid), HF (hydrofluoric acid, less common), CH3COOH (also known as C2H4O2 acetic acid, also known as acetic acid), H2S (hydrosulfuric acid), HCO (hypochlorous acid).
3.Common strong bases.
KOH (potassium hydroxide), Ca(OH)2 (calcium hydroxide), NaOH (sodium hydroxide), BA(OH)2 (barium hydroxide), CSOH (cesium hydroxide).
4.Common weak bases.
Mg(OH)2, Al(OH)3, Zn(OH)2, Fe(OH)3, Fe(OH)2, Cu(OH)2, of which only soluble in water).
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Anonymous users2024-01-28Chloric acid is a strong acid, do not believe in the hydrolysis of potassium chlorate.
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Anonymous users2024-01-27The main reason is that the electronegativity of oxygen is greater than that of chlorine to compete for electrons of chlorine, with the increase of the number of oxygen on chlorine, there are fewer and fewer electrons on chlorine, so that chlorine has a strong ability to absorb electrons, oxygen itself also has lone electron pairs, attracted by chlorine, forming a p-d feedback, so the chlorine-oxygen bond is enhanced, so that the electron cloud density on chlorine increases slightly, and the oxygen decreases, hydrogen is a proton, which is quite with a positive electric center, so it is weaker to combine with oxygen, so the acidity is enhanced.
A method for judging the strength of oxygenated acids.
Rewrite oxygenated acids into the form of (OH)MXON.
For example, h2CO3 is rewritten as (OH)CO
The strength of oxygenated acid is judged by the value of n.
If n=0, then it is a very weak acid such as hclo --oh)cl if n=1 then it is a weak acid such as h2siO3 --OH)2SIO2 if n=2 then it is a strong acid such as H2SO4 --OH)2SO2 if n=3 then it is a super acid such as hclo4 --OH)clo3 so the acidity of oxygenated acid is related to the oxygen atom.
It must be sulfuric acid, the stronger the non-metallic nature of the element, the more acidic it is that the hydrate corresponding to the most ** oxide (that is, the most ** oxygenated acid) will be.
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