All Questions
Tagged with equilibrium kinetics
115
questions
2
votes
2
answers
434
views
reaction coordinate, kinetics, equilibrium in example
In this special reaction coordinate diagram with two reaction mechanisms, I tried to analyze it in two other ways, one with kinetics, another with equilibrium.
A. kinetics, I tried to find reaction ...
- 211
2
votes
1
answer
92
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Relative fraction of population of different enzyme conformations, knowing the rate constants
Say we have an enzyme that has multiple structural conformations, say A, B, C and D. Additionally, we say that the enzyme must go through all conformations, to get to one end to the other, i.e.
$$\...
- 123
4
votes
0
answers
646
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Validity of the equation K_eq = ratio of rate constants of forward and reverse reactions
If we have a multi-step reaction (which involves more than one step to reach the products; a complex reaction, one may say), then is the following equation valid?
$$K_\mathrm{eq} = \frac{K_\mathrm{...
- 141
6
votes
3
answers
3k
views
Which diagram shows the effect of catalysis on chemical equilibrium?
My course book has the diagram in figure (1) to represent the effect of a catalyst on chemical equilibrium. I drew the second diagram in figure (2).
When reviewing the diagram in figure (1), I ...
- 992
2
votes
1
answer
2k
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Why do experiments not verify the law of mass action?
I read the answer to Rate Law vs Law of Mass Action and it's written in the answer:
In the rate law, the rate equation consists of actual factors that changes with change in experimental ...
- 5,501
4
votes
1
answer
1k
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Formation of hydrogen bromide: Does the concept of "order" apply to this reaction?
Started reading Levine's Physical Chemistry [1] yesterday, and I hit upon (another) wall.
On page 517, Chapter 15, she includes a reaction resulting in the formation of $\ce{HBr}$ from $\ce{H2}$ and $\...
- 18.8k
3
votes
2
answers
225
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Conceptual tussle with kinetics of equilibrium and non-equilibrium processes
Prologue:
Recently started with Chemical Kinetics at class. Came across a couple of points in Levine's Physical Chemistry (the book was recommended on Chem.SE; so I thought I'd give it a read :D) that ...
- 18.8k
0
votes
2
answers
2k
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Why is the rate of a reaction proportional to the concentrations of reactants raised to their stoichiometric coefficients?
Consider a gaseous state elementary reaction $$\ce{aA(g) + bB(g)} \overset{k_\mathrm{f}}{\underset{k_{\mathrm{b}}}{\ce{<=>}}}\ce{ cC(g) + dD(g)}$$
I know that for this reaction, $$\Delta G = \...
- 1,278
6
votes
1
answer
159
views
Question about relation between two time constants
I am not a chemist, but a neuroscientist, so bear with me. I have struggled with this problem for over a week now and have realized it's a chemical question. I'll try to explain it so no neuroscience ...
- 61
26
votes
4
answers
4k
views
Relation between chemical kinetics and chemical equilibrium
In my chemistry book, the law of chemical equilibrium is derived from the law of mass action:
For a reversible chemical reaction $$\ce{aA +bB\rightleftharpoons cC + dD}$$ where $a$, $b$, $c$ and $d$ ...
- 5,685
1
vote
1
answer
138
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An equilibrium reaction in the presence of other fast reactions -- is it necessary also to consider the individual rate constants?
When mathematically describing an equilibrium reaction, we generally treat it as though it is enough just to specify the equilibrium constant, as it relates the concentrations of products and ...
- 141
1
vote
2
answers
283
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Equilibriums and Overshooting
If we have some reaction $\ce{A(aq) + B(aq) -> AB(aq)}$ and right now we have less $\ce{A}$ and $\ce{B}$ then we would have at equilibrium, is there ever a time where the amount of $\ce{A}$ and $\...
- 111
1
vote
1
answer
131
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Hydrolysis of a salt B2X
An aqueous solution of soluble salt $\ce{B2X}$ has concentration of 0.1 M.
Given data :
$\ce{K_b(BOH) = 2 × 10^{–5}}$
$\ce{K_{a1}(H2X) = 2 × 10^{–7}}$
$\ce{K_{a2}(H2X) = 5 × 10^{–10}}$
...
7
votes
2
answers
247
views
first-order binding kinetics with multiple identical binding sites
I have beads in solution at concentration $B$ which have $N$ independent binding sites for a single target molecule at concentration $T$. $T$ is small compared to $B$, so most beads will probably not ...
- 173
1
vote
0
answers
61
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Why is the rate law typically written in terms of reactants whilst equilibrium constants are written in terms of products*?
That is, equilibrium constants are written in terms of products/reactants or for Ksp, in terms of products only.
Why doesn't the rate law also focus on products?
I usually see it written in terms of ...
- 2,853