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Anonymous users2024-02-07That's too much! It's troublesome.
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Anonymous users2024-02-06To summarize as follows, the general formula is mainly used, and the chemical formula can be substituted according to the actual situation ([within the reaction conditions)].
1. Alkane RH reacts with X2, RH+ X2 Rx+Hx (R represents alkane group, X=Cl, Br, I, the same below) [light].
2. Aromatic hydrocarbons (such as benzene, toluene) and x2 are substituted on the benzene ring (PH represents phenyl C6H5, the same below) PHH+ X2 C6H5X+Hx [Febr3Fe].
3. Aromatic hydrocarbons (such as toluene) and x2 replace phch2+x2 phchx+hx [light] on the branched chain
4. Aromatic hydrocarbons (such as benzene, toluene) and concentrated nitric acid nitrification reaction PHH + Hno3 C6 H 5NO2 + H2O [(written above the arrow) concentrated sulfuric acid, (written below the arrow) heated (generally 55 60 degrees Celsius)].
5. Sulfonation of aromatic hydrocarbons (such as benzene) and concentrated sulfuric acid PHH+ H2SO4 C6 H 5SO3+H2O [heating (generally 70 80 degrees Celsius)].
6. Hydrolysis of halogenated hydrocarbons Rx + NaOH roh + Nax [(write above the arrow) H2O, (write below the arrow) heating].
7. Substitution reaction of alcohol RoH and Hx RoH + Hx Rx + H2O [heating].
8. Intermolecular dehydration of alcohol RoH (such as ethanol) into ether R-OH + R'-OH R-O-R' + H2O [(written above the arrow) concentrated sulfuric acid, (written below the arrow) 140].
9. Carboxylic acid R(Cooh)N and alcohol R(OH)N (N is a positive integer) undergo esterification reaction, such as RcoOH + R'OH Rcoor' + H2O [(write above the arrow) concentrated sulfuric acid, (write below the arrow) heating, the arrow is a reversible sign].
10. Hydrolysis of ester rcoor' rcoor' + H2O rcooh + r'OH [(written above the arrow) dilute sulfuric acid, (written below the arrow) heated, the arrow is reversible].
or rcoor'+ naoh rcoona+r'oh [heat].
11. Phenol reacts with concentrated bromine water phoh + 3br2 tribromophenol (chemical formula written by yourself) + 3HBR [unconditional, but it should be noted that it is very concentrated bromine water, and tribromophenol should be precipitated symbol].
12. Hydrolysis of disaccharides.
C12H22O11+H2O C6H12O6+C6H12O6 [dilute acid solution enzyme].
Sucrose, fructose, glucose.
C12H22O11+H2O2C6H12O6 [dilute acid shed solution enzyme].
Maltose: Grape Qibichase.
13. Proteolysis [dilute acid high skin solution alkaline solution enzyme].
1) cyclohexane + Cl2 --- light ---monochlorocyclohexane + HCl2) monochlorocyclohexane + NaOH ---ethanol, heated --- cycloethylene + NaCl + H2O >>>More
Hey, I don't even want to write about it, didn't you learn all this in the academy?
I'll tell you the truth, it's not very useful for you to make so many equations, it's not very useful, it's not like you usually accumulate with a strong interest, and chemical equations don't have to be memorized one by one, since it's a science subject, you have to grasp the principles and Wubi's laws, rote memorization is not something we should do, and the equations of the one upstairs are all the foundation of the foundation, and it's a complete waste of time to memorize them all, but then again, if you think about a few representative reactions yourself, you might end up with one as ten.
If you want to extrapolate the problem, you can do the ion equation. >>>More
1. For those relatively simple chemical equations for balancing, the best way to use is the least common multiple methodFor example: mg+o2 ignition = mgo, the number of oxygen atoms on the left is 2, and the number of oxygen atoms on the right is 1, then the least common multiple of 2 and 1 is 2, then the coefficient in front of the magnesium oxide on the right should be 2, the coefficient in front of the magnesium oxide has become 2, then the coefficient in front of the magnesium atom should also be 2, the final formula should be 2mg+o2=2mgo, of course, the final must indicate the conditions for the chemical reaction, For example, magnesium reacts with oxygen to form magnesium oxide, and the condition required is to ignite oxygen, and finally the correct chemical formula can be obtained: 2mg+O2 ignition ==2mgo >>>More