How to write the kinetic equation of a solid-state reaction
The construction of the solid-state reaction kinetic equation involved many considerations. First of all, according to Fick's law, when the concentration of substance A in the A interface layer and the B interface layer across the reaction layer were 100% and 0, respectively, there was dm/dt = DS * 1/x (where dm/dt represented the material transmission rate, D was the dispersion coefficient, S was the reaction interface area, and x was the variable related to the thickness of the reaction layer). Further, dx/dt = k4 'D/x, and thus, the relationship x2 = k4t was obtained. In a solid-state reaction, because the speed of the three steps of the phase interface reaction, the mass transfer process, and the crystal core formation-growth process changed with different reagents, reaction conditions, and reaction time, the total reaction speed was determined by the slowest speed of the three steps. Therefore, different reaction models appeared to describe the solid-state reaction dynamics. As for the model of dispersion, a specific equation could be obtained if the solid state reaction of spherical particles was applied to the solid state reaction of spherical particles as a plane contact. If the reaction was a spherical particle with a certain radius, there would be corresponding equation assumptions, and based on some assumptions, the equation needed to be corrected. For example, when studying the chemical reactions in solid-state batteries, according to the concentration changes of different reaction substances (such as lithium, oxygen, etc.) in the reaction and the reaction steps (such as the reaction in the positive pole roasting process), the relationship between the concentration of the reaction substances and time, the relationship between the reaction rate and the temperature, etc., were determined through experiments. The basic physical and chemical principles such as the law of conservation of mass and the law of conservation of energy were used to construct a kinetic equation suitable for a specific solid-state reaction system. Different solid-state reaction systems had different reaction materials, reaction conditions, reaction mechanisms, etc. The specific form and construction process of the kinetic equation would be different. It needed to be determined by comprehensive experimental data and theoretical analysis. Read more exciting novels for free
The definition of solid-state reaction
The solid-state reaction was a process in which different metals or compounds reacted through solid-state inter-dispersion. It was mainly used to prepare non-crystalline films or non-crystalline powders. Unlike liquid and gas reactions, it relied on the shape and transportation properties of the solid, involving the flow and reaction of substances in the crystal. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction equation for the mutual transformation of the oxygen state
以下是一些涉及氧化态相互转化的反应方程式： 1. **铁与硫酸铜的置换反应（铁的氧化态从0升高到 +2，铜的氧化态从 +2降低到0）** - 反应方程式：\(Fe + CuSO_{4}=FeSO_{4}+Cu\)。 - 在这个反应中，铁单质（\(Fe\)，氧化态为0）失去2个电子变成亚铁离子（\(Fe^{2 + }\)，氧化态为+2），是还原剂;硫酸铜中的铜离子（\(Cu^{2+}\)，氧化态为+2）得到2个电子变成铜单质（\(Cu\)，氧化态为0），硫酸铜是氧化剂。 2. **氯气与氢氧化钠的歧化反应（氯的氧化态部分从0升高到+1，部分从0降低到 - 1）** - 反应方程式：\(Cl_{2}+2NaOH = NaCl + NaClO + H_{2}O\)。 - 氯气（\(Cl_{2}\)，氧化态为0）中一部分氯原子失去电子，氧化态升高到 +1形成\(NaClO\);另一部分氯原子得到电子，氧化态降低到 - 1形成\(NaCl\)。 3. **铁与氯化铁的归中反应（铁的氧化态从0升高到+2，部分铁的氧化态从+3降低到+2）** - 反应方程式：\(Fe + 2FeCl_{3}=3FeCl_{2}\)。 - 铁单质（\(Fe\)，氧化态为0）失去电子，氧化态升高到+2;氯化铁中的铁离子（\(Fe^{3+}\)，氧化态为+3）得到电子，氧化态降低到+2。 4. **铜与浓硝酸反应（铜的氧化态从0升高到 +2，氮的氧化态从+5降低到+4）** - 反应方程式：\(Cu + 4HNO_{3}(浓)=Cu(NO_{3})_{2}+2NO_{2}\uparrow+2H_{2}O\)。 - 铜（\(Cu\)，氧化态为0）失去2个电子，氧化态升高到+2;浓硝酸中的氮原子（\(N\)，氧化态为+5）得到1个电子，氧化态降低到+4。 5. **铜与稀硝酸反应（铜的氧化态从0升高到+2，氮的氧化态从+5降低到+2）** - 反应方程式：\(3Cu + 8HNO_{3}(稀)=3Cu(NO_{3})_{2}+2NO\uparrow+4H_{2}O\)。 - 铜（\(Cu\)，氧化态为0）失去2个电子，氧化态升高到+2;稀硝酸中的氮原子（\(N\)，氧化态为+5）得到3个电子，氧化态降低到+2。 6. **过氧化氢在酸性条件下被高锰酸钾氧化（氧的氧化态从 - 1升高到0，锰的氧化态从+7降低到+2）** - 反应方程式：\(2KMnO_{4}+5H_{2}O_{2}+2H_{2}SO_{4}=K_{2}SO_{4}+MnSO_{4}+5O_{2}\uparrow+2H_{2}O\)。 - 过氧化氢中的氧原子（\(O\)，氧化态为 - 1）失去电子，氧化态升高到0;高锰酸钾中的锰原子（\(Mn\)，氧化态为+7）得到5个电子，氧化态降低到+2。 7. **硫化氢与硫酸的反应（硫的氧化态从 - 2升高到0，部分硫的氧化态从+6降低到+4）** - 反应方程式：\(H_{2}S + H_{2}SO_{4}=S\downarrow+SO_{2}+2H_{2}O\)。 - 硫化氢中的硫原子（\(S\)，氧化态为 - 2）失去电子，氧化态升高到0;硫酸中的硫原子（\(S\)，氧化态为+6）得到2个电子，氧化态降低到+4。 8. **碳与氧气的化合反应（碳的氧化态从0升高到+4，氧的氧化态从0降低到 - 2）** - 反应方程式：\(C + O_{2}\stackrel{点燃}{=}CO_{2}\)。 - 碳（\(C\)，氧化态为0）失去4个电子，氧化态升高到+4;氧气中的氧原子（\(O\)，氧化态为0）得到2个电子，氧化态降低到 - 2。 <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 chemical equation of the reaction between iron chloride-solid and sulfuric acid
Ferric acid (FeCl2) solid does not react with sulfuric acid (HQ). In chemistry, there was no chemical reaction when iron chloride-sulfuric acid was mixed, because they existed in the form of ions in the solution (Fe3, Cl3, H3, Cl3). These ions did not produce new substances, which did not meet the conditions for chemical reactions (forming new substances such as precipitations, gases, or water). <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>
Why can't the reaction rate be calculated in solid state?
The concentration of the solid was regarded as a constant. According to the reaction rate calculation formula v = Delta c/Delta t (v is the average rate, Delta c is the concentration change, and Delta t is time), since the concentration of the solid was constant, the concentration change was zero, so the reaction rate of the solid could not be calculated by conventional methods. Moreover, when reacting between solid substances, the contact area between the molecules of the reagents was small, unlike in solution where the contact between the molecules of the reagents was sufficient and the chance of the molecules meeting was small. The reaction rate was slow and difficult to calculate using the conventional reaction rate concept. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to write the reaction equation of propyi-oxygen
The reaction equation for the synthesis of epoxidide from the oxygen of propyne is: CH ^=CHCH + O ^= O(CH ^- C(CH)). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to write Diels-Alder reaction equation
The Diels-Alder reaction is a reaction between a compound containing a double bond or triple bond and a diene to form a six-membered ring compound. Generally speaking, the reaction between a conjugated diene (dienophile) and a substituted alkene (dienophile) to form a substituted cyclohexene could be roughly expressed as: conjugated diene + dienophile → substituted cyclohexene. However, the specific reaction equation would vary depending on the specific structure of the diene and the dienophile. For example, when the diene was 1,3 -Butadiene and the dienophile was ethene, the reaction equation was: CH2 = CH-CH = CH2 + CH2 = CH2 → Cyclohexene (This is just a simple structure. In fact, when writing the complete equation, you have to express the exact chemical bond and atomic connection method, etc.). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to write the reaction equation of lithium and oxygen?
The reaction equation of lithium and oxygen is [4Li + O ^= 2Li ^O]. Under normal conditions, lithium and oxygen react to form lithium dioxide. It is difficult to form a solute, and it is even more difficult to form a super oxide-like substance. Regardless of whether it was slowly oxided in the air or burned in oxygen, it would produce lithium dioxide. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to write the reaction equation of alkyls and bromines?
Under the illumination, the substitution reaction between the alkyls and the bromines occurred. The reaction equation was: CnH2n +2 + Br2 → CnH2n +1Br2 (expressed by the general formula). For example, the reaction of methane and helium: CH4 + Br2 → CH3Br4. Moreover, the reaction could not stop at the first order substitution. It could carry out the second and third order substitution reactions. Under heating conditions, the Bromine vapor will undergo the same bromination reaction with the alkyls, such as: CH3CH2CH3 + Br2-heating → CH3CHBrCH3 + Brr, and the product is also a variety of bromated alkyls. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to write the equation for the reaction with potassium Permanganate
If an aldo group can be oxided to a Carboxyl group under the condition of acidic Permanganate, for example, using Formalide as an example, the reaction equation may be: 4MnO4-+5HCho+2H+→ 5CO32-+4Mn2++6H2O; It may also be: 5HCho +4KMnO4 + 6H2SO4 → 5CO2 → +2K2SO4 + 4MnSO4 + 11H2O; Using Alcohol as an example, the reaction equation is: 2CH3- Cho+O2== catalyst, heating == 2CH3COON; Using p-methylethene as an example, the reaction equation is: 5CH3 - C6H4 - CH3+12MnO4-+36H+→5HOOC - C6H4 - COOH+12Mn2++28H2O。 <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>