The reaction phenomenon of the reaction of nitrates and the reaction of the reaction of the nitrates and the sodiumsThe 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.
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What is the reaction of the aluminum thermal reaction? Is it an exhalation reaction?Aluminiothermic reaction was a kind of oxide-reduction reaction between aluminum and metal or non-metal compounds at high temperatures. Aluminiothermic reaction was an exhaling reaction, and its heat release was very large, usually enough to heat the product above the melting point, and the reaction could generally occur locally and be self-sustaining. This characteristic also reflected the energy-saving characteristics of the reaction.
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What is the reaction of the rearrange reaction?Rearrangement reaction refers to the migration of certain atoms or groups in the molecules of organic compounds under certain reaction conditions, resulting in the reorganization of the molecular structure. For example, the Beckmann Rearrangement Reaction was a reaction in which ketoximes were rearranged into N-substituted diamides under the action of an acidic catalyst; the Cope Rearrangement Reaction was a (3,3)-sigma-shift rearranging reaction of 1,5 -diene; the Hofmann-Martius Rearrangement Reaction was a reaction in which N-alkylated aromatic compounds were rearranged to the corresponding o-/p-alkylated aromatic compounds under the action of acid catalyst; the Curtius Rearrangement Reaction was a type of nuclopathic rearrangements.
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Reaction Formula of Substitution Reaction for the addition reaction of organic substancesAdditional reaction:
- The addition reaction of ethene and Bromine: <<CH2 = CH2 + Br2>
- The addition reaction of ethene and hydrogen bromidate was as follows: <CH2 = CH2>
- Under certain conditions, addition reactions could also occur between ethene, hydrogen, and water. Since the chemical properties of ethyne (carbon-carbon triple bond) were similar to that of alkene (carbon-carbon double bond), similar addition reactions could also occur.
- The aromatic ring can undergo an addition reaction with hydrogen (in the presence of a catalyst such as Ni).
- Aldol groups can undergo a reduction reaction (addition reaction), such as: <anno data-annotation-id ="00000000 - 4c00 - 4c00 - 8c00 - 9c00 - 9c000b000000"> CH3CH20H </anno>.
Substitution reaction:
- The substitution reaction between methane and Cl2: CH4 + Cl2.
- The substitution reaction of the aromatic ring: For example, the substitution reaction with the aromatic group using FeBr3 as a catalyst; the nitration reaction with the aromatic group using concentrated sulfuric acid under heating conditions (the hydrogen on the aromatic ring is replaced by the nitrogen group).
- The substitution reaction of the halated carbon was as follows: <<CH3CH2Br2>+<NaBr2>>.
- The substitution reaction of alcohol: <CH3CH20H>+<br>> longrightarrow <CH3CH2br>+<H2O>>
- The ester's cleavage reaction (which can be seen as a substitution reaction):<CH3COOCH2CH3 + H2O>
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Dafeng beat the night watchman beatDafeng The Night Watcher was a novel written by a newspaper seller. According to the document provided, the chapter list of this novel included many chapters from the main body of Dafeng Nightwatchman, such as Prison Disaster, Demon Haunting, and Reasoning in the Xianxia World. However, these documents did not provide any information about the specific content or storyline of Dafeng Nightwatchman. Therefore, it was impossible to provide a detailed answer to the question of " Dafeng Nightwatchman ".
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Dafeng beat the night watchman beat" Dafeng Nightwatchman " was a web novel that was published on Qidian Chinese Network. The author was a newspaper seller. On September 16th, 2020, Dafeng Nightwatchman won the top ten works of the year for the fourth Orange Melon Online Literature Award. In April 2021, Dafeng Watchmen was included in the " China Online Literature Impact List: IP Adaptations Impact List."
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Dafeng beat the night watchman beat" Dafeng Nightwatchman " was an online fantasy novel that was published on Qidian Chinese website. The author was a newspaper seller.
The novel was mainly about Xu Qi 'an, who had graduated from the police academy. He woke up and found himself in prison. Three days later, he was exiled to the border…His initial goal was to protect himself and live a leisurely life as a rich man in this society without human rights. However, when Xu Qi 'an realized that he could be promoted by solving cases, he began to use his wisdom and criminal investigation knowledge to solve strange cases one by one, and gradually became an important official of the Great Feng Dynasty.
The novel combined many elements such as Xianxia, detective, and official struggles. The plot was compact and the rhythm was bright, which was very popular among readers.
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Dafeng beat the night watchman beatThe correct pronunciation of the word "geng" for Da Feng's watchman was "geng". Someone pointed out that the title of the book should be pronounced "jing", but according to the standard of modern Mandarin, the word "geng" only had two pronunciations, both of which were "geng". Although the pronunciation of the word 'geng' in ancient Chinese was different from that of modern Chinese, modern Mandarin only retained some of the characteristics of the pronunciation of ancient Chinese, so the correct pronunciation of the word 'geng' was geng.
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The Determination of Reaction Rate and Reaction ConstantThe chemical reaction rate represented the speed of the chemical reaction, which was the rate of change of the reaction progress with time or the reaction progress of the chemical reaction in unit time and unit volume. The average reaction rate was the decrease of the concentration of the reagent or the increase of the concentration of the product in unit time. The instantaneous reaction rate was the limit of the average reaction rate that approached zero. The reaction rate constant represented the chemical reaction rate at a unit concentration. It was independent of the concentration, but it was affected by factors such as temperature, catalyst, and solid surface properties. Usually, the larger the reaction rate constant, the faster the reaction would proceed.
There were two common methods to measure chemical reaction rates: chemical and physical methods. The chemical method used chemical analysis to directly measure the change in the concentration of the reagent or product over time to obtain the chemical reaction speed. However, the chemical analysis speed might not be able to keep up with the reaction speed and affect the measurement results. However, it could provide an absolute concentration value. The physical method was more extensive and convenient. It was to determine the reaction speed based on some physical properties that changed with the reaction, such as the pressure method, the distension meter method, or the volume method; the optical rotatory method, the interference method, the chromicity method, and the spectrophotosity method; and the electrical property method, such as the conductivity method, the potential method, the polarography method, the dielectrical constant method, and the mass spectrum method.
As for the determination of the reaction constant, for example, in the experiment of determining the rate constant of the fading reaction by the method of the catalyst, based on the principle of the catalyst kinetic method, the reaction system of the fading reaction of the Evans Blue by the reaction of the potassium bromate under the action of the NaNO3 was proposed. The corresponding chemical reaction rate constant was calculated by measuring the change of the absorption of the reaction system at different initial concentration and temperature. In terms of specific operations, the stock solution of the relevant reagents was first prepared, and then the reagents were added into the color-measuring tube according to a certain order and dosage. The timing and volume were started, and then the absorption curve was measured. The reaction constant was determined by preparing reaction solutions of different compositions, adding the solution after reacting for a period of time to stop the reaction, and taking a sample to measure the absorption curve. Finally, the concentration of other components was maintained at a constant temperature, and the change of the light absorption with time when different amounts of the solution of bromate or the solution of NaNO3 were measured, as well as the change of the light absorption with time when the specific amount of the solution of NaNO3 was measured at different temperatures.
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