All Questions
Tagged with equilibrium vapor-pressure
37
questions
15
votes
2
answers
2k
views
How is volatility useful in the production of acids?
Sulfuric acid because of its low volatility can be used to manufacture more volatile acids from their corresponding salts.
How does volatility affect the production of acids? Isn't it that sulfuric ...
- 3,487
6
votes
1
answer
216
views
Cases when Raoult's law is unsolvable
Setup
Consider a closed binary mixture of known total molar composition $n_i$, held at volume $V$ and temperature $T$. The equilibrium phase composition is determined by $\mu_i^{vap} = \mu_i^{liq}$. ...
- 261
5
votes
1
answer
643
views
Is it possible to have only liquid in a closed container?
I recently read an answer by Aman Rusia for this question: Is a liquid in a container always in equilibrium with its vapour?
In it, they say that
You can't have a container filled with only ...
- 2,109
3
votes
1
answer
1k
views
Solution to Raoult's Law for a volatile binary solution (no pun intended)
Raoult's Law
In a closed container, $$P_A=P_A^\circ x_A$$ where $P_A$ is the pressure of compound in gaseous phase, and $x_A$ is the mole fraction of the liquid component A in the liquid mixture. If ...
3
votes
1
answer
530
views
What is the connection between vapor pressure and intermolecular force explanations of boiling?
I've had boiling explained to me in two ways, and I'm having trouble understanding how they connect.
The first way is that a liquid is held together by the intermolecular forces, and boiling involves ...
- 31
3
votes
1
answer
562
views
Relative humidity and vapor-pressure in equilibrium
I have quite an unclear understanding of relative humidity. I am writing my understanding on the topic and please correct me wherever I'm wrong:
What I understood:
Let's say $\ce{H2O}$ has a (...
- 583
2
votes
1
answer
84
views
Mathematical models of Vaporization-Condensation dynamics
I am a mathematician now studying an introductory chemistry course.
Consider a liquid in a closed container, at (say) room temperature.
Then some of the liquid will vaporize. Then some of the ...
- 141
2
votes
1
answer
1k
views
Why is the equilibrium constant of water with its vapour equivalent to its vapour pressure?
Can someone conceptually explain why the equilibrium constant is equivalent to the vapour pressure of water for the above equilibrium reaction?
For example if $K = x$, then it is said that vapour ...
2
votes
1
answer
220
views
Partial pressure of gases in a container with a piston
I've been having problems with the following problem.
Figure 1.
A container with a piston like that shown in Figure 1 is filled with $0.10$ $mol$ of Ar and $1.00$ $mol$ of water (liquid and vapor). ...
- 605
2
votes
1
answer
636
views
Bromine monochloride equilibrium
The value of $K_p$ for the reaction
$$\ce{Br2(l) + Cl2(g) <=> 2BrCl(g)}$$
is $\pu{1 atm}$. At equilibrium in a closed container partial pressure of $\ce{BrCl}$ gas is $\pu{0.1 atm}$ and at ...
- 335
2
votes
0
answers
32
views
Working out energies of hydrogen bonds by comparing chemical potential of vapour and condensed phase - equation derivation
I want to ask a question about working out the energy of a hydrogen bond between two water molecules, $w_{AA}$ using the chemical potentials of vapour and condensed phases.
I was reading K. Dill, ...
- 1,230
2
votes
0
answers
167
views
Measuring vapour pressure in a closed system
My experiment requires the determination of vapour pressure from which I will calculate the number density (or number of moles of the molecule) later, for a closed system.
Here's my setup :
Liquid ...
- 1,582
2
votes
1
answer
142
views
Is every substance in equilibrium with its vapours?
In one of my previous questions, I got an answer from user Jan:
The smell of a compound as we perceive it usually depends on which receptors in the nose will bind the molecule (or not).
These ...
- 592
1
vote
3
answers
1k
views
Is this the right conclusion for a thought experiment?
In this thought experiment, let’s consider the surrounding to be air that is composed of entirely water vapor (no other species like $\ce{O2}$ and $\ce{N2}$ are present). The surrounding is infinitely ...
- 133
1
vote
1
answer
109
views
Why does Raoult's Law have a weighted sum instead of a direct sum?
I'm fully aware of the various questions asked about Raoult's Law, and I'm asking this after having gone through all of them and not finding a suitable answer to my question.
I have studied, that at a ...
- 139