What does the reaction essence of an exothermic reaction mean?
The essence of an exothermic reaction is that the energy absorbed by the breaking of old chemical bonds is less than the energy released by the formation of new chemical bonds. The excess energy is released in other forms (usually heat). The process of chemical reaction included the breaking of old chemical bonds and the formation of new chemical bonds. The breaking of chemical bonds required the absorption of heat, and the formation of chemical bonds would release heat. In the heat release reaction, the total energy of the reagent was higher than the total energy of the product, so that in the reaction process, the total energy released by the chemical bond formed by the product was greater than the total energy absorbed by the chemical bond breaking of the reagent, so heat was released. Read more exciting novels for free
Why is the Aluminiothermic Reaction so Exothermic?
Aluminiothermic reaction was a kind of oxide-reduction reaction between aluminum and metal or non-metal compounds at high temperatures. In this reaction, aluminum was converted from a simple substance to aluminum dioxide. The aluminum atoms lost their electrons and were oxided, while the metal ions in the metal dioxide were reduced by gaining electrons. This kind of oxidoreduction reaction involved the breaking and formation of chemical bonds. When aluminum atoms combined with oxygen atoms to form aluminum dioxide, they would release a large amount of energy, which would result in intense heat release. Moreover, aluminum was relatively active and easy to lose electrons. Once the reaction was triggered, it could be carried out quickly and continuously, allowing a large amount of heat to be released in a concentrated manner. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Exothermic means what heat is generated by the reaction
In an exothermic reaction, the total energy of the reagent was greater than the total energy of the product. During the reaction process, a portion of the energy would be converted into heat and released. Therefore, the reagent did not generate heat, but the energy of the reagent itself was converted into heat and released during the reaction process. This was because the essence of a chemical reaction was the breaking of old chemical bonds and the formation of new chemical bonds. The breaking of old chemical bonds absorbed energy, while the formation of new chemical bonds released energy. When the energy released by the formation of new chemical bonds was greater than the energy absorbed by the breaking of old chemical bonds, the excess energy was released in the form of heat, which was expressed as an regenerative reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Essence of Ferrous Sulphate Reaction
The nature of the reaction depended on the type of reaction. For example, in some reactions, it was actually a metathesis reaction, which would form a deposit. In the reaction related to oxygen, due to the reduction of the iron, the iron will be oxided in the presence of the hydrogen to form the hydrogen of the iron. Under acidic conditions, it will be oxided by oxygen to form the hydrogen of the iron and water. Ferrous ions would also undergo a decomposition reaction in water, combining with the water's free radical ions to form a deposit of Ferrous Oxides. However, this decomposition reaction was irreversible. In a solution with a strong acid, a high concentration of hydrogen ions would suppress the decomposition reaction of the Ferrous Ion. In addition, Ferrous Sulphate was an acidic substance, which would neutralize with an acidic substance. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Essence of the Reaction of Salt and Salt
氯化铵与氢氧化镁反应的实质可从以下方面分析。氯化铵是强酸弱碱盐，在水中发生水解产生氢离子，即\(NH_{4}^{+}+H_{2}O = NH_{3}\cdot H_{2}O + H^{+}\)。氢氧化镁难溶于水，但氢离子能与氢氧化镁中的氢氧根离子反应，即\(Mg(OH)_{2}+2H^{+}=Mg^{2 + }+2H_{2}O\)，从而促使氢氧化镁溶解。 从另一个角度看，这一反应也可理解为氢氧化镁沉淀能溶解于铵盐中。因为铵盐（如氯化铵）存在时，铵根离子与氢氧根离子结合，使氢氧根离子浓度降低，例如\(MgCl_{2}+2NH_{4}OH \rightleftharpoons 2NH_{4}Cl + Mg(OH)_{2}\downarrow\)这个可逆反应，当氯化铵大量存在时，平衡向左移动，沉淀溶解。此外，该反应也有气体生成推动反应进行的因素。 <a href="/?from=ask_words" style="color:red" target="_blank">点击前往免费阅读更多精彩小说</a>
The Development and Present Situation of Intelligent Control of Continuous Exothermic Reaction Kettle
In the chemical production process, the temperature of the reactor had a serious impact on the production quality of chemical products, so the intelligent control of temperature was crucial to production. For the temperature control of the reaction kettle, the conventional single-loop pid adjustment was suitable for simple situations. It included the controlled object (reaction kettle), the detection and transmission device (thermocouples or thermal resistance), the control device (DPS), and the executive adjustment mechanism (regulating valve). For example, when the temperature of the reactor did not reach the set value, the hot water intake valve was opened wide, and when it reached the set temperature, it was closed to maintain the temperature. However, for a relatively complicated reaction process such as a continuous exothermic reactor (such as heating up the reaction first, releasing a large amount of heat after the reaction starts, and cooling down to make the reaction proceed smoothly), simple PID control was difficult to meet the requirements. At present, there were many research results on the temperature control of the reactor (including the continuous exothermic reactor) at home and abroad. There are many ways to improve on the basis of the PID control: 1. Some scholars combined the prediction model with the PID control and proposed the output prediction PID controller to compensate the lag problem. 2. There were also methods to combine double cross limiting with PID, or to combine the inner membrane control IMC with PID to improve the control effect. 3. Furthermore, the fuzzy PID control algorithm was designed by combining PID and fuzzy ideas, which was superior to the general PID algorithm in response, overshooting and tracking performance. Based on expert experience and rules, fuzzy control was suitable for non-linear and lagging complex systems. However, it was easy to cause oscillations when used alone, so it was often combined with other algorithms to improve. For example, it could be combined with PID control to meet the requirements of large inertia molten salt temperature control system, or applied to furnace temperature control, air conditioning control to improve control accuracy, etc. By predicting the future state of the controlled object in advance, the prediction control can solve the control problem of the lagging system. There are many kinds of prediction control algorithms, such as combining fuzzy and prediction ideas to design fuzzy prediction controller to solve the temperature control problem of gas phase equipment; proposing a new type of general prediction control algorithm (AM-GC) to solve the problem of large lag, large inertia and time-varying in temperature control; combining grey prediction and PID to improve the traditional control method of large lag system. In addition to the above methods, there were also Smith prediction control, neural network control, self-adapting control, and a class of advanced optimization algorithms (such as particle swarm, ant colony, etc.) combined with the above methods. Although the Smith Predictor Control had a simple structure, it was too dependent on the system model and was sensitive. The neural network was a multi-disciplinary field of technology, not a specialized control algorithm. In short, the intelligent control of the continuous exothermic reactor process was constantly developing, and the research and combination of various control methods were constantly improving the temperature control of the reactor. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What is the essence of the cell's oxidoreduction reaction?
The essence of the cell's oxidoreduction reaction was the transfer of electrons. The electron transfer was a microscopic phenomenon, and it was reflected in the change of the chemical valency (namely, the number of electrons) on the macro level. The reaction of losing electrons with an increase in the oxygen number was an oxygen reaction, and the reaction of gaining electrons with a decrease in the oxygen number was a reduction reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What does reaction mean?
The reaction was a response to the incident. From different fields, there were many meanings: 1. In the field of natural science, chemical reactions, optical reactions, nuclear fission, nuclear fusion, and so on were phenomena and processes that caused changes in matter. 2. In terms of biology, it was the change or activity of the original state of the organism, tissue, and organ caused by the stimulation of the biological nervous system. For example, the leaves of the mimosa closed due to stimulation, which was the reaction of the plant after being stimulated. The discomfort caused by taking certain drugs was also the reaction of the body to the stimulation of the drug. 3. In the field of psychology, the theory of behavior psychology regarded it as a basic concept. It believed that the reaction was relatively direct following the stimulus, but this view was more mechanical. The modern psychology scholars of the theory of materialist thought that the reaction was the psychological activity caused by objective things and the active reaction of psychological activity to objective things. 4. In daily life, it can indicate the opinion, attitude, or action caused by something. For example, after someone expressed an opinion, others might react in agreement or opposition. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction Formula and Phenomenon of the Reaction of the Reaction
The reaction equation is: 2NaHSO2 + 2CH CH2Ox = Na SO2 +H SO2 + 2CH CH2Ox. The phenomenon of this reaction was not mentioned in the information provided, so it was impossible to give an accurate answer. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction phenomenon of the reaction of nitrates and the reaction of the reaction of the nitrates and the sodiums
The reaction between the acid and the acid would result in the formation of a sulfuric acid deposit. The reaction equation was Na Chi SiOx +2HNOOx == H Chi SiOx +2NaNOOx, and the reaction phenomenon was the formation of a white deposit. In this reaction, the sulfuric acid did not show any oxidisation, but only showed its acidic nature. This was because the silicon in the silica was already in the highest state, and the acidic nature of the sulfuric acid was stronger than that of the sulfuric acid, which was in line with the principle of making a weak acid from a strong acid. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction equation phenomenon and explanation of the phenomenon of the reaction equation of the reaction of the reaction
There is no chemical reaction between NaCl2 and magnesiumcarbonate2. In chemistry, the conditions for metathesis reactions to occur were the formation of precipitations, gases, or water. After mixing the two, the conditions for the metathesis reaction were not met, so there was no reaction, no reaction equation, and no reaction phenomenon. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>