All Questions
Tagged with equilibrium kinetics
115
questions
2
votes
2
answers
103
views
Is equilibrium constant at a given temperature derived from Gibbs free energy of reaction valid for doing simple kinetic modelling?
I intend to do a kinetic study of simple alcohol catalytic dehydrogenation reactions in the gas phase. I want to start with simple power law kinetics using $K_\mathrm{eq}$ to account for the ...
- 29
1
vote
1
answer
181
views
How to derive the steady-state solution for simple two-step reaction with differential equations? [closed]
Consider this simple two step reaction, a variant of a Michaelis-Menten type of problem, where $\ce{A}$ and $\ce{B}$ reversibly bind to make $\ce{AB}$, and $\ce{AB}$ and $\ce{C}$ reversibly bind to ...
- 113
2
votes
2
answers
586
views
Chaos in chemical reactions
I recently read about Chaos Theory and was wondering if a chemical reaction results in or shows characteristics of chaos (I found a few examples of such reactions here)
Chaos theory concerns ...
user78585
1
vote
1
answer
104
views
What does it mean for chemical reaction network to be in equilibrium?
What does being in "equilibrium" mean for a set of chemical reactions? If we have some number $n$ of $\ce{A}$ molecules and $m$ of $\ce{B},$ and the following reaction where $\ce{A}$ and $\ce{B}$ can ...
- 11
6
votes
1
answer
635
views
Equilibrium constant for a solid-solid equilibrium
Suppose there are two equations:
$$
\begin{align}
\ce{A(s) &<=> B(g) + C(s)} &\quad &K_1 \tag{R1}\\
\ce{B(g) &<=> D(s) + E(s)} &\quad &K_2 \tag{R2}
\end{align}$$
...
- 487
1
vote
1
answer
1k
views
Relationship between equilibrium constants of a multi-step reaction [closed]
If a reaction proceeds in steps, is the equilibrium constant of every step taken into account to arrive at the final constant? Or can we just calculate equilibrium constant for the overall reaction ...
- 1,480
1
vote
2
answers
411
views
Determining Kc for the equilibrium involving iron thiocyanate using spectrophotometric data
$$\ce{Fe^3+(aq) + SCN-(aq) <=> [Fe(SCN)]^2+(aq)}$$
$\pu{12.0 mL}$ of $\pu{0.00110 mol L-1}$ $\ce{Fe^3+}$ was added to $\pu{6.00 mL}$ of $\pu{0.00140 mol L-1}$ $\ce{SCN-}$. The absorbance of the ...
- 45
0
votes
0
answers
44
views
Equilibrium Constant and Reaction Mechanism [duplicate]
How is it possible for the equilibrium constant to not depend on a reaction's mechanism?
For the elementary reaction
$$aA + bB \rightleftharpoons dD + eE$$
I understand that the rate of the ...
- 69
5
votes
2
answers
901
views
Intuition for why catalyst affects both forward and reverse reactions equally?
I have looked for quite a long time on the site however all the answers involve mathematical explanations involving Arrhenius's equation. I would really like an intuitive reason (or one using ...
- 151
19
votes
2
answers
30k
views
Is there a difference between equilibrium and steady state?
The term equilibrium is used in the context of reversible reactions that reach a point where concentrations no longer change. The term steady-state is used in enzyme kinetics when the concentration of ...
- 41.2k
2
votes
1
answer
435
views
Determining reaction order in equilibrium reactions [closed]
Am hoping that someone can help me with the below question, and that I am asking in the right place. Am new here, so please forgive any missteps.
Given a reaction like this:
$$\ce{A + B <=> C +...
1
vote
2
answers
604
views
Which rate, the forward or reverse rate of acid dissociation, is more strongly affected when diluting acetic acid in aqueous solution?
Acetic acid is a weak acid. It is in equilibrium with acetate and hydronium ions in aqueous solution:
$$\ce{CH3COOH(aq) + H2O(l) <=> CH3COO-(aq) + H3O+(aq)}$$
Ostwald's law states that the ...
- 41.2k
-1
votes
1
answer
69
views
Rate of a reaction [duplicate]
We know that the rate of a reaction $\ce{aA + bB -> cC + dD}$, the rate of the forward reaction is given by $r_\mathrm f = k_\mathrm f[\ce A]^p[\ce B]^q$ where $ a\neq p$ and $ b\neq q$ according ...
- 178
3
votes
0
answers
82
views
Reverse rate coefficient for thermolecular and thermal dissociation reactions
I am an astrophysicist working in exoplanetary atmosphere chemistry right now, in particular modelling the chemical kinetics taking place within the atmosphere. Based on this IOP article, we have that ...
15
votes
1
answer
2k
views
Can a zeroth order reaction be reversible?
After recently studying about chemical equilibrium, I was convinced that the forward and backward reaction rates meet each other at equilibrium.
However thinking about zeroth order reaction annoyed ...
- 161