failed organic chemistry 2 times story

You could start by analyzing what went wrong. Maybe it was a lack of understanding of certain concepts. Try getting a tutor who can explain the difficult parts clearly. Also, make a study schedule and stick to it. Do more practice problems and use different study resources like textbooks, online lectures, and study groups.

Study harder. Read the textbook thoroughly and make sure you understand every concept. Practice lots of problems, especially those related to reactions and synthesis.

There were several types of reactions in organic chemistry: 1. ** Substitution reaction **: Some atoms or atomic groups in organic molecules are replaced by other atoms or atomic groups. For example, they could be substituted by halo, esterfied, dehydrated, nitrated, and Sulfonated. Alkane, alkene, aromatic, alcohol, alcohol, and so on can undergo substitution reaction with the elemental halo; Benz and its homolog, alcohol, and alkyls can undergo nitration reaction; Benz and its derivative can almost all be Sulfonated; Carboxylic acid and alcohol can undergo ester reaction; Halocarbon, ester, glycan, disose, and protein can undergo a cleavage reaction under certain conditions; Alcoholic acid, carbolic acid, and so on could react with active metals such as Na (also a type of substitution reaction). Alcohol could also react with hydrogen Halide (HX), and carbolic acid or alcohol could undergo intermolecular dehydration reactions. 2. ** addition reaction **: The direct combination of the saturated carbon atoms in the organic molecules with other atoms or atomic groups to form a compound. Any compound with a double bond or triple bond in the molecular structure could undergo an addition reaction, such as alkene, diene, alkyne, and its homolog, as well as the compounds of the same class, such as the compounds of the same class, such as the compounds of the same class, and the compounds of the same class. The organic reagents involved in the addition reaction included small molecules such as H <2>, X <2>(X is Cl2, Br2, I), HX, H <2> O, and HCN. However, it should be noted that the carbon-oxygen double bond in the ester group could not undergo an addition reaction. The carbonyls of the alkyls and ketones could only undergo an addition reaction with H <anno data-annotation-id ="0000000 - 4000 - 4000 - 8000 - 9000 - 80000000000"> 2 </anno>. Conjugated diene had two different addition forms. 3. ** Elimination reaction **: Under appropriate conditions, an organic compound will remove a small molecular (such as H <2> O, HX, etc.) from two adjacent carbon atoms of a molecular to form an saturated (double or triple bond) compound. There were two conditions for the elimination reaction to occur. One was that the carbon atom with-Ox (or-X) had an adjacent carbon atom, and the other was that the adjacent carbon atom must also have an H atom. The two common types of organic compounds in middle school were alcohol and substituted alcohol. 4. ** Polymerization reaction **: The combination of many single molecules to form a high molecular compound, including addition and condensation reactions. Polyaddition reaction was the condensation of small molecules to form a high molecular weight. The organic substances that could undergo polyaddition reaction included alkene, dialkene, and substances containing C = C. Polycondensation reaction was the removal of small molecular compounds between organic compounds and the combination of them to form a high molecular compound. Usually, there were condensing reactions between acids, acids, glucose, dibasic alcohol, and dibasic acid. 5. ** Redox reaction **: Redox reactions also exist in organic chemistry, such as the reaction of alcohol. 6. [Pericyclical reaction: This type of reaction has its own special rules to determine whether it can occur. For example, the Woodward-Hoffman rule can be used to determine whether a Pericyclical reaction can occur.] 7. ** Rearrangement reaction **: A type of organic reaction. Many organic reactions are named after the discoverer, including the rearranged reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

In general, almost all organic bases could react with sulfuric acid, such as amine compounds and the acid radical of weak organic acid (such as Na-aceto). Adding the gaseous hydrogen into alkynes and alkynes could lead to an addition reaction. Theoretically, it could also catalyze the aldol condensation reaction. The hydrogen could also undergo alfa-monoclorination with the keto, and 1,4 addition reactions with the alpha and beta unsaturated keto and aldol. The reaction of organic amine and sulfuric acid would produce organic salt, such as methylamine, lethylamin, propylamine, and so on. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

They usually make complex chemical concepts more visually appealing and easier to understand. The characters and storylines often help to explain difficult topics in a fun way.