All Questions
Tagged with experimental-chemistry kinetics
35
questions
2
votes
0
answers
222
views
Activation energy of the reaction between magnesium carbonate and hydrochloric acid
I've been working on a project that uses some abnormal methods to calculate the activation energy using only one trial of an exothermic reaction.
However now that I've completed the lab, I want to ...
- 29
3
votes
1
answer
595
views
Calculating rate constant for reaction between ethyl acetate and sodium hydroxide
My research question is investigating how temperature affects the rate constant for the reaction between ethyl ethanoate (acetate) and sodium hydroxide. I understand that I must titrate sodium ...
- 173
2
votes
1
answer
184
views
Finding a Heterogeneous Catalyst for Hydrogen Peroxide
I'm designing an experiment to test the effect of surface area of a catalyst on the activation energy of hydrogen peroxide decomposition. However, I don't think I can use a powdered catalyst because ...
- 29
7
votes
2
answers
1k
views
Mechanism of the blue bottle experiment
I have researched multiple mechanisms for this experiment yet all of them suggest different versions or are too vague. None of them are consistent since the final overall equation seems to be missing ...
- 73
3
votes
0
answers
150
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Briggs-Rauscher reaction doesn't oscillate and turns blue with Vitamin C
I tried to recreate the Briggs-Rauscher reaction by using a solution of $\ce{H2O2}$, $\ce{KIO3}$, $\ce{H2SO4}$, $\ce{CH2(COOH)2}$, $\ce{MnSO4}$ and a soluble starch. I used this recipe.
In container ...
- 39
2
votes
1
answer
64
views
Diffusion of multiple gases at once
Graham’s law of diffusion states the rate of diffusion between two gases is inversely proportional to their molar masses. Now, this is helpful when we are focused on two gases. But that is rarely the ...
- 99
-3
votes
1
answer
46
views
How does it affect the equilibrium expression if the concentration of any component remains the same?
I am a high school student and I am very confused in Equilibrium expression, My confusion is that "Why we don't write concentration of solids and pure liquids in equilibrium expression?" ...
- 252
2
votes
0
answers
1k
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What is the recipe for the Belousov-Zhabotinsky reaction for correct simulation with the Oregonator model? [closed]
For a school project I'm trying to model the Oregonator and perform some experiments with the Belousov-Zhabotinsky reaction. Like predicting the reaction and the swings in concentrations. For that it ...
- 187
1
vote
2
answers
843
views
Unusual Result in Kinetics Lab
The question: In the lab described below, why did the decolorization reaction described, which should be first order in each of the two reactants, go most slowly when the reactants were most ...
- 4,451
1
vote
0
answers
80
views
Measuring change in concentration of hydrogen peroxide
I am conducting an experiment to find the rate constant of the decomposition of hydrogen peroxide, $\ce{H2O2}.$ For this, I was planning on using the integrated rate law:
$$\ln(\text{final ...
- 49
3
votes
1
answer
46
views
What are the equations giving the molar flow of different molecules linked by a reaction?
Let consider a steady state CSTR in which occurs the following reaction:
$$\ce{aA + bB \leftrightarrow cC}$$
Notations:
$F_i$ is the molar flow of $i$, $r$ is the rate of reaction, $V$ is the ...
- 31
3
votes
3
answers
4k
views
Changing the order of the reaction with change in concentration
The reaction
$$\ce{2 A + B + C -> D + 2 E}$$
is found to follow the rate law as
$$r = k[\ce{A}][\ce{B}]^2[\ce{C}]^0$$
If the concentration of $\ce{A}$, $\ce{B}$ and $\ce{C}$ increases two times ...
- 78
1
vote
0
answers
121
views
Is the iodide and persulfate reaction bimolecular?
Given the following reaction in an aqueous state:
$$ \mathrm{2I^- + S_2O_8^{-2}\rightarrow I_2 + 2SO_4^{2-}}$$
Is it bimolecular o trimolecular? Because two molecules of iodide react with one ...
- 51
0
votes
1
answer
2k
views
how to calculate the initial concentration of NaOH in a mixture? [closed]
I have doubts about how to find the equation for the calculation of the initial concentration of $\ce{NaOH}$. I have the following information:
in the kinetic study of a reaction,
We measure $\ce{20....
- 13
1
vote
0
answers
454
views
What effect does an increase in concentration of copper sulphate solution have on the rate at which copper is deposited at the cathode?
I have been studying electrolysis in school and was wondering whether a higher amount of copper sulfate solution would produce a greater mass of copper in an electrolytic cell with two copper ...
- 11