# Questions tagged [rate-equation]

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### Derivation of form of rate laws [closed]

for a given reaction $A \rightarrow B+C$, I read in my book that the rate law has to be of the form $$\frac{d[A]}{dt} = - k[A]^m$$ Can someone tell me (or point to some sources) on how we know the ...
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### Is it possible to calculate the theoretical rate of reaction?

I am conducting an experiment where I will be changing concentration (0.2 mol/dm3, 0.4 mol/dm3, 0.6 mol/dm3, 0.8 mol/dm3, 1.0 mol/dm3) and seeing how that affects the rate of reaction for a reaction ...
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### HCN reactor design

For my diploma work, I should design a hydrogen cyanide (HCN) producing reactor. I found that for the BMA process, overall $$\ce{CH4 + NH3 -> HCN + 3 H2 \quad{} \Delta{}H_r = \pu{251 kJ / mol} }$$ ...
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### A first order gaseous reaction - getting the rate law

There is a specific example cited in our NCERT Class 12 textbook, to find out the rate law equation for a general gaseous reaction, $$\ce{A->B + C}$$ It describes the entire procedure as shown: ...
1 vote
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### Is my derivation for the reaction orders of a single-step reaction valid?

Recently in my chemistry class I learned about reaction orders. For some reaction $\ce{r_1A1}+\ce{r_2A2}+\dots+\ce{r_nA_n}\rightarrow\ce{B}$, $m_1,\dots{,m_n}$ are the orders of that reaction. The ...
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### Calculate IC50 from fluorescence kinetic

I have an assay in which a fluorescence signal is generated when the enzyme reaction progresses. The fluorescence signal increases until a maximum is reached. Than it keeps constant. The first 1 h ...
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### Why isn't the unit of rate constant for any reaction always per second?

It is formally agreed upon that $K_{eq}=\prod_{j}a_j^{\nu_j}$ where $\nu_j$ is stoichiometric coefficient of species $j$ (negative for reactants and positive for products). This equation results in ...
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### Can the overall order of a reaction ever be strictly less than $1$?

In A-level chemistry we are taught that: To every reaction: $$\sum_{i=1}^n c_iA_i\to\sum_{j=1}^m d_jB_j$$There is a rate equation: $$r=\kappa[A_1]^{\alpha_1}[A_2]^{\alpha_2}\cdots[A_n]^{\alpha_n}$$...
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### Calculating ionic strength at different concentrations

Zn$^{2+}$ reacts with a molecule, B, in a solution at several different concentrations of NaCl. Determine the charge of the biomolecule and k$_0$ (second order) ​​(assume that Zn$^{2+}$ does not ...
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