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1. The most advanced oxygen-containing acids of different elements, the stronger the non-metallic nature of acid-forming elements, the stronger the acidity. For example, non-metallic Cl>S>P>C>Si is acidic: Hclo >H so > H po >H Co > H Sio.
2. Oxygenated acids of different valences of the same element, the higher the valency of the element, the stronger the acidity.
3. For the same main group element, the more the number of nuclear charges, the larger the atomic radius, and the stronger the acidity of the hydride.
4. The acidity of anaerobic acids that are not part of the same main group depends on memory.
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1. Strong acids: perchloric acid, hydroiodic acid, sulfuric acid, hydrobromic acid, hydrochloric acid, nitric acid, iodic acid, etc.
2. Medium and strong acids: oxalic acid (adipic acid), sulfurous acid, phosphoric acid, pyruvic acid, nitrite acid.
3. Weak acid: carbonic acid, citric acid, hydrofluoric acid, malic acid, gluconic acid, formic acid, lactic acid, benzoic acid, acrylic acid, acetic acid (acetic acid), propionic acid, stearic acid, hydrosulfuric acid, hypochlorous acid, boric acid.
Strong acids in the high and high range: HCl, HBR, Hi, H2SO4, HCO4, HCO4 is the most acidic among oxygenated acids, HI is the most acidic among anaerobic acids, and the rest are weak acids.
According to the degree of ionization of acid in aqueous solution, there are strong acids and weak acids, and it is generally believed that strong acids are completely ionized in aqueous solutions, such as hydrochloric acid and nitric acid; Weak acids are partially ionized in aqueous solutions, such as acetic acid, carbonic acid.
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First of all, high school.
Strong acids in the range: HCl, HBR, Hi, H2SO4, HCO4, HCO4 is the most acidic among oxygenated acids, and HI is the most acidic among anaerobic acids.
The rest are weak acids.
The acidity of weak acids is as follows: H2SO3>HF>CH3COOH> H2CO3>HCO>H2SIO3
If the reason is ... There are so many things to know about chemistry in high school, just cope with the college entrance examination, and naturally learn it when you get to college.
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From strong to weak, they are: perchloric acid, hydroiodic acid, sulfuric acid, hydrobromic acid, hydrochloric acid, nitric acid, iodic acid (the above is a strong acid, you can understand it, and the university involves the ranking of strength and weakness), oxalic acid (adipic acid), sulfurous acid, phosphoric acid, pyruvic acid, nitrite (the above five are medium and strong acids), citric acid, hydrofluoric acid, malic acid, gluconic acid, formic acid, lactic acid, benzoic acid, acrylic acid, acetic acid, propionic acid, stearic acid, carbonic acid, phenol (also called carbolic acid), hydrosulfuric acid, hypochlorous acid, boric acid, Silicic acid (the rest is weak or very weak)!
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Hello! It is only necessary to compare the stability of the anions.
ABC has electron-withdrawing groups, and the carbonyl group is stronger than the hydroxyl group, so A is the most acidic, and B's hydroxyl group is stronger than C's (closer), so B Cd is the weakest.
Answer: a>b>c>d
The common acidity is strong or weak from strong to weak:
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