Why is it possible for an intrinsic reaction to occur spontaneously?
The spontaneous nature of a chemical reaction was not only dependent on whether the reaction was heat absorbing or heat releasing, but also on the degree of chaos in the system. In the past, there had been a view that chemical reactions without any external energy involved always tended to be more heat-emitting (Thompson-Besello principle), that is, the more heat released, the more negative the change in the heat, the lower the system energy, and the more spontaneous the reaction. However, many counterexamples were later discovered, such as the melting of ice into water, the dissolving of lithium nitrates in water, and the decomposition of solid potassium chloride-like compounds were all spontaneous, heat-absorbing reactions. In 1864, Clausius proposed the concept of entropies. In 1872, Boltzmann defined entropies as the degree of random arrangement between microscopic particles, and there was a formula S = kIn Omega (S is the entropies;k is Boltzmann's constant, 1.38*10 ^J·K ¹; Omega is the number of possible states of mesoscopes particles, namely the degree of chaos). Although some of the reactions absorbed heat, the degree of chaos in the system increased after the reaction. When the increase in entropies was enough to make up for the increase in energy caused by the absorption of heat, the reaction might proceed spontaneously. Read more exciting novels for free
Will the reaction between the two occur?
There was no reaction between the two. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Will the pleura reaction occur after the puncture?
Pleura reactions usually occurred during the puncture, but they could also occur after the puncture. During the puncture process, the patient's fear, hunger, nervousness, and other factors may cause a pleura reaction, which is mainly manifested as irritating cough, chest tightness, palpitation, short breath, sweating, pale face, and even fainting. After the end of the puncture, due to the irritation caused by the puncture operation to the pleura, it may also lead to the persistence of the pleura reaction or the subsequent occurrence of related symptoms. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
When did the pregnancy reaction occur?
Generally, pregnancy reactions (early pregnancy reactions) begin to appear around 6 weeks after menstruation. There may be symptoms such as fear of cold, dizziness, salivation, fatigue, lethargy, lack of appetite, preference for acid, aversion to greasy food, nausea, morning vomiting, etc. Most of them are related to the elevation of human chorionic gonadotropin, and the weakening of the digestive tract of pregnant women. These reactions usually gradually disappear after three months of pregnancy (12 weeks of menstrual arrest), but due to individual differences, the specific reaction time, symptoms, and duration of each person may be different. It is also related to each person's psychological state and mental state. Some people with relatively introverted personalities may have more severe early pregnancy reactions, and may even have digestive symptoms throughout pregnancy. Some women may have symptoms such as dull pain in their lower abdomen and chest pain when the fertilized egg is implanted (about 15 days after pregnancy); their body temperature will rise after conception and last for a period of time; they may have changes in appetite in the early stages of pregnancy; they may also have symptoms such as frequent urine, fatigue, and sleepiness in the early stages of pregnancy. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How can a refraction reaction occur?
When a wave encounters an obstacle in its path, such as a slit, a small hole, or a disk, it may be subjected to a refraction reaction. In addition, when a light wave passes through a medium with an uneven index of refraction, or when a sound wave passes through a medium with an uneven sound resistance, a similar effect will occur. Under certain conditions, not only could water waves and light waves produce visible refraction, but other types of electromagnetic waves (such as X-rays and radio waves) could also produce refraction. Since real objects at the atomic scale had wave-like properties, they also showed a phenomenon of refraction, and their properties could be studied through quantum mechanics. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Can a substitution reaction occur in the chloride-water?
The Cl2 + H2O = Cl2 + HClO), which was an oxidoreduction reaction rather than a substitution reaction. However, in some other systems, for example, the substitution reaction between methane and Cl2 could occur under light conditions. However, the reaction between methane and Cl2 did not occur because the environment of Cl2 was different from that of pure Cl2. In the chloride-water system, no typical organic substitution reaction was found. Therefore, there was no substitution reaction in the water itself. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Will the reaction between potassium Permanganate and phosphorous acid occur?
Phosphorous acid had strong reducing properties, while potassium Permanganate had strong oxidisation properties. The two would undergo an oxido-reduction reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The elimination reaction between the substituted alcohol and the alcohol will occur.
Halogenated compounds could undergo an elimination reaction with the alcohol to produce alkene. For example, the reaction of CH3CH2CH2br + C2H5ONa would produce products such as CH3CH = CH2 and NaBr. Generally speaking, the conditions for the elimination reaction of the halalocarbon were the alcoholic solution of a strong base (such as the alcoholic solution of the alcoholic ester, etc.), heating, and the elimination reaction could only occur with the halalocarbon with a hydrogen atom on the beta-carbon atom. There are 2 (or 3) beta-carbon atoms, and there may be 2 (or 3) ways to eliminate the hydrogen atoms on the two (or three) beta-carbon atoms, and the hydrogen atoms are mainly eliminated from the beta-carbon atoms with less hydrogen. The elimination reaction usually followed Zaitsev's rule, that is, the more stable the substitution group of the alkene generated by the elimination reaction, the easier the elimination reaction to occur. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Can the silver mirror reaction occur between glucose and glucose?
Dextrose and glucose could both undergo the silver mirror reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How does the reaction between potassium nitrates and sugar occur?
There would be an oxido-reduction reaction between the sugar and the potassium nitrates. The nitrogen was an oxidiser, and the sugar was a reducing agent. When the reaction occurred, a large amount of heat and gas would be released. For example, after mixing according to a certain ratio (such as 24KNO + 5C H 2 O = 12K 2 CO +12N 2 (gas)+30H O +18CO 2 (gas)), the reaction would be more intense under certain conditions and might even cause an explosion. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How long does it take for an allergic reaction to antibiotics to occur?
Antibiotic allergy reactions could take a long time. If it was fast, there might be a reaction within a few minutes to a few hours after taking the medicine, such as redness, itching, rashes, or rapid breathing and palpitation. As for the slower ones, they might only show allergic reactions a few days or even weeks after taking the medicine, such as a serum-sickness-like reaction. However, no matter how fast or slow it is, once you find a suspected allergic reaction, you have to quickly find a doctor to check it out. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>