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Anonymous users2024-02-15The most commonly used ones are on the line, and the common chemical equations are sufficient, and the number is not counted.
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Anonymous users2024-02-14The best way to find exercises on the Internet, lots to do, practice how to match equals, etc., and Wang is not"Mastery"
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Anonymous users2024-02-13It's okay, it's very easy to memorize, and there are more than 40 of them
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Anonymous users2024-02-1201. Carbon monoxide is burned in oxygen, 2CO+O2===2CO2
02. Quicklime reacts with water: CaO+H2O==Ca(OH)2
03. Reaction of iron and copper sulfate solution: Fe+CuSO4==FeSO4+Cu
05. Magnesium and dilute hydrochloric acid reaction: mg+2HCl==mgCl2+H2
06. Hydrochloric acid and caustic soda react: HCl+Naoh==NaCl+H2O
07. Sodium hydroxide and copper sulfate: 2NaOH+CuSO4==Cu(OH)2+Na2SO4
08. Sodium chloride solution and silver nitrate solution: NaCl+AgNO3==AGCL+Nano3
09. Sodium sulfate and barium chloride: Na2SO4 + BACl2 = = BaSO4 + 2NaCl
10. Methane burns in the air: CH4+2O2 ignites CO2+2H2O
11. Alcohol burns in the air: C2H5OH+3O2 ignites 2CO2+3H2O
12. Carbon monoxide reduces iron oxide: 3CO+Fe2O3 and high temperature 2FE+3CO2
13. Carbon dioxide through clarified lime water (test carbon dioxide): Ca(OH)2+CO2==CaCO3+H2O
14. Reaction of sodium hydroxide and carbon dioxide (removing carbon dioxide): 2NaOH + CO2 = = Na2CO3 + H2O
15. Caustic soda absorbs sulfur dioxide gas: 2NaOH + SO2 = = Na2SO3 + H2O
16. Reaction between sulfuric acid and caustic soda: H2SO4 + 2NaOH = = Na2SO4 + 2H2O
17. Aluminum hydroxide drug ** hyperacidity: 3HCl + AL (OH) 3 = = ALCL3 + 3H2O
18. High-temperature calcined limestone (carbon dioxide industrial production method): CaCO3 high-temperature CaO+CO2
19. Water is divided into 2H2O energized 2H2+O2 under the action of direct current
20. Heating potassium permanganate: 2kmNO4 K2MNO4 + MNO2 + O2
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Anonymous users2024-02-11Chemical reaction, decomposition reaction, oxidation reaction, reduction reaction, displacement reaction, neutralization reaction, metathesis reaction, reaction of acid-base salts and oxides.
Several basic laws of chemical reactions, the law of conservation of mass, the law of conservation of atoms, the law of conservation of energy, these three laws are all introduced in your textbooks, and I won't talk nonsense here. >>>More
Hey, I don't even want to write about it, didn't you learn all this in the academy?
1) cyclohexane + Cl2 --- light ---monochlorocyclohexane + HCl2) monochlorocyclohexane + NaOH ---ethanol, heated --- cycloethylene + NaCl + H2O >>>More
agno3+nacl=agcl()+nano3 ag+ +cl+=agcl
bacl2+na2so4=baso4+2naclcuso4+na2s=cus+naso4 >>>More
1. In general, find a relatively single element, that is, it appears in a substance before the reaction, and appears in a substance after the reaction, if there is an odd number and an even number, it will be flattened according to the odd number, which is the front of the odd number *2 If there is still a fraction in the result *4 >>>More