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Unit of Reaction Rate equation

Unit of Reaction Rate equation

2026-10-01 23:03
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仅基于上下文 对于反应速率方程\(v = k[A]^m[B]^n\cdots\)(其中\(v\)是反应速率,\(k\)是反应速率常数,\([A]\)、\([B]\)等是反应物的浓度,\(m\)、\(n\)等是反应级数)。 反应速率\(v\)的单位通常是\(mol\cdot L^{-1}\cdot s^{-1}\)(表示单位时间内单位体积内物质的量的变化)。 当反应速率方程为\(v = k[A]^m[B]^n\cdots\)时,浓度\([A]\)、\([B]\)等的单位是\(mol\cdot L^{-1}\)。 1. 对于零级反应(\(m + n+\cdots= 0\)),反应速率\(v=k\),由于\(v\)的单位是\(mol\cdot L^{-1}\cdot s^{-1}\),所以零级反应速率常数\(k\)的单位是\(mol\cdot L^{-1}\cdot s^{-1}\)。 2. 对于一级反应(\(m + n+\cdots = 1\)),设反应为\(v=k[A]\),因为\([A]\)的单位是\(mol\cdot L^{-1}\),\(v\)的单位是\(mol\cdot L^{-1}\cdot s^{-1}\),则一级反应速率常数\(k\)的单位是\(s^{-1}\)。 3. 对于二级反应(\(m + n+\cdots= 2\)),设反应为\(v = k[A]^2\)或\(v=k[A][B]\),由浓度单位\(mol\cdot L^{-1}\)和反应速率单位\(mol\cdot L^{-1}\cdot s^{-1}\),可得二级反应速率常数\(k\)的单位是\(L\cdot mol^{-1}\cdot s^{-1}\)。 依此类推,可以得到不同反应级数的反应速率方程中速率常数\(k\)的单位。 点击前往免费阅读更多精彩小说

multistep reaction rate equation

For multi-step reactions (complex reactions), the reaction rate equation could not be simply written according to the total reaction equation. Complex reactions were composed of multiple elementary reactions (reactions that could be completed after a single collision). In the elementary reaction, there is a strict quantitative relationship between the reaction rate and the concentration of the reagent. It follows the law of mass action, that is, at a constant temperature, the rate of the elementary reaction is proportional to the product of the power of the concentration of the reagent. The power index is equal to the Stoichiometer number in the reaction equation. The general form of the rate equation is: (v = kc^{a}(A)c^{b}(B)(where k is the rate constant, c(A) and c(B) are the concentration of the reagents, and a and b are the measurements in the reaction equation). However, for multi-step reactions, the rate of the entire reaction was usually determined by the slowest elementary reaction step. For example, the reaction mechanism of a complex reaction was: a)<X + Y> Z>(fast reaction);b)<Z + W> Q>(slow reaction, speed determining step). Then the rate equation of this complex reaction mainly depended on the rate equation of speed determining step b, the reaction rate <x>(v = kc(Z)c(W)>. If the concentration of the intermediate product <Z>> could be expressed by the reagents <X>,<Y>>, then the reaction rate equation expressed by the original reagents could be obtained. In short, the multi-step reaction rate equation needed to be determined by analyzing the reaction mechanism, determining the rate-determining step, and then combining the characteristics of each elementary reaction step and the relationship between the concentration of the reagents and the intermediate products. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-07-17 18:28

Reaction rate equation of iron and dilute sulfuric acid

The chemical equation of the reaction between iron and dilute sulfuric acid was: FeSO2 = FeSO2 + H2. The reaction rate was affected by many factors, such as the concentration of the reagent, temperature, the surface area of the iron, and the presence of a catalyst. However, there was no specific equation called the " reaction rate equation of iron and dilute sulfuric acid " to describe the reaction rate. From the perspective of reaction rate theory, according to the effective collision theory, the reaction rate was related to the frequency of effective collisions between activated molecules. " For example, when the concentration increases, the number of molecules of the reagent in the unit volume increases, and the number of activated molecules also increases correspondingly. The effective collision frequency increases, and the reaction rate increases. When the temperature increases, the speed of the molecular movement increases, and the percentage of activated molecules increases. The effective collision frequency increases, and the reaction rate increases. The surface area of the solid iron increases, and the chances of contact between the reagents increase, and the reaction rate also increases. If there was a catalyst involved, the activation energy of the reaction could be reduced, allowing more molecules to become activated molecules, increasing the effective collision frequency and accelerating the reaction rate. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-08-25 18:18

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>

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2026-07-15 06:10

Reaction equation of alkene and NaBH

1. According to Markovnikov's rule, the bonus was: <CH3- CH = CH2 + B2H6> 2. Alcohol formed after the decomposition: <CH3- CH(B2H5)-CH3 + H2O> <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-07-01 07:57

The chemical equation of the matting reaction

Under the high temperature smelting conditions, the matte-making reaction can be expressed as: (FeS)+(Cu2O)=(FeO)+(Cu2S), the reaction's Gibbs free energy change is? G0 = -144750+13.05T (J), and the equilibrium constant lgK of the reaction at 1250 ° C is 9.86, indicating that the reaction is rapidly moving to the right at the smelting temperature. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-07-04 01:20

Reaction equation of nitrogen and lithium

The chemical equation for the reaction between nitrogen (N ^) and lithium (Mn ^) is: <br><br> 3 Mn + N ^<br> stack rel {ignite}{=<br>=<br>Mg₃N₂\)。 <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-07-04 03:13

Reaction equation of monobromopropan and alcohol

1-The equation for the reaction of 2-Bromopropan in the presence of Na ethanate is: CH CH2 CH2 Br2 + EdONa → CH CH= CH2. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-07-04 20:40

Reaction equation of Cl2 and Febr2

When there is insufficient Cl2, the chemical equation of the reaction is: 3Cl2 + 6FeBr2 == 4FeBr2 + 2FeCl2; when there is excessive Cl2, the reaction equation is: 2FeBr2 + 3Cl2 == 2FeCl2 + 2Br2; when Cl2 and FeBr2 react at a ratio of 1:1, the chemical equation is: 6FeBr2 + 6Cl2 == 4FeCl2 + 2FeBr2 + 3Br2. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-07-04 22:09

Butyl acetate reaction equation

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2026-07-05 17:19

Reaction equation of diesel and oxygen

Dieselfuel is a complex mixture, its main component is a carbon dioxide (CnH2n +2, etc.). The chemical equation of its combustion reaction is: CnH2n +2+(3n +1)/2O2 → nCO2 +(n + 1)H2O. However, in actual diesel combustion, due to the air composition (including N2, O2, etc.) and different combustion conditions, the combustion products include carbon dioxide and water, carbon dioxide (produced when there is no oxygen), carbon dioxide (produced when incomplete combustion), nitrogen dioxide (produced when high temperature and oxygen are rich), sulfur dioxide (produced when diesel contains sulfur), etc. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-08-06 18:04
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