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New answers tagged kinetics

How is the ln k term in the linearised Arrhenius equation acceptable?

\begin{align} k &= A \exp\left(-\frac{E_\mathrm a}{RT}\right) \label{eq:1}\tag{1}\\ \ln k &= \ln A -\frac{E_\mathrm a}{RT} \tag{2} \end{align} If you use the equation \eqref{eq:1} to get ...

What happens when para-water ice is suddenly melted?

Note that this answer is not complete. Note that wherever a "*" is placed in the answer, it means it requires figures or explanations to support it. If anyone found them or anything related, ...
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chemical equilibrium and activity

You intuition is telling you that ions should suppress more ions from coming into solution and that is probably correct and were it the only thing happening it should be observed. In fact it is. ...
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1 vote

chemical equilibrium and activity

The $\ce{Ba^{2+}}$ ions will surround by anions The $\ce{SO_4^{2-}}$ will be surrounded by cations So they stabilize a lot more actually. Remember that this may take long, but thermodynamically that ...
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Relation between activation and threshold energies

Arrhenius activation energy $E_\mathrm{A}$ is one more closely related quantity that needs to be distinguished from activation and threshhold energies. The difference between the quantities is briefly ...
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Relation between activation and threshold energies

The activation energy $E_a$ of a reaction is the amount of energy required to take reactants to products across some reaction coordinate. The threshold energy $E_0$ is related, but defined as the ...
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What is the difference between a single displacement reaction and a two competing reaction system?

Upon thinking about this most displacement reactions follow your scenario. If the two reactions are independent then A is not necessary to the production of BC and is not in the equation for its ...
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Excited states and emission lifetimes

Thanks @Achem and @porphyrin for your comments. I do not know if an Answer is the right format for this Comment but the comments do not allow enough character to develop my argument. I think we are ...
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Steady-state approximation for the destruction of ozone

The error in your logic is when you write: Next, I express the overall rate in terms of the disappearance of $\ce{O3}$. This means that Rate$=−\frac{d[\ce{O3}]}{dt}=k_2[\ce{O}][\ce{O3}]$. For any ...
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Dependence of rate on the nature of reactants and other factors

The rate is given by the differentials you present and these have values depending on concentration, temperature etc. as you mention. What defines a reaction is the rate constant. In your example  ...
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