All Questions
Tagged with gas-phase-chemistry gas-laws
17 questions
1
vote
1
answer
339
views
If Graham's law doesn't apply to the ammonia and hydrogen chloride diffusion in a glass tube demonstration, is there a law that does?
A comment below What exactly are "white fumes" and why does holding a bottle of ammonia (conc) next to a bottle of HCl (conc) make them? links to The
Royal Society Of Chemistry video ...
- 5,997
-1
votes
2
answers
738
views
Could an LPG gas ever become lighter than air?
Both of the LPG gases, propane ($\ce{C3H8}$) and butane ($\ce{C4H10}$) are heavier than air. Propane is $1.55$ times heavier and butane is $2.08$ times heavier. Is same-temperature air always lighter ...
- 185
1
vote
1
answer
66
views
Purging submersible with nitrogen
I do a lot of short term ocean field deployments where system electronics are self contained in a submersible enclosure. A new project I'm working on requires a long term deployment in the deep ocean. ...
- 111
0
votes
2
answers
91
views
Crossing at critical temperature of a gas
This is written in the book 'Treatise on Thermodynamics' by Max Plank-
the crossing of the critical temperature at any pressure other than the critical pressure differs in no way from the crossing of ...
- 57
0
votes
1
answer
38
views
If the gaseous molecules didn't have any kinetic energy would the surface of a filled balloon still be firm? [closed]
The most of the ideal gas law equation is based on the fact that the gaseous molecules are moving around and cause collisions and thus have some pressure. If these molecules were to not have any ...
- 11
-1
votes
1
answer
174
views
Is this example considered liquifying a gas under pressure?
In my work place, we have a drum that has propene inside at a pressure of around 2,5 bar and at a temperature of around -15ºc and the boil-off of that drum is aspirate by a compressor and is ...
- 21
0
votes
1
answer
543
views
Is there a phase diagram available for hydrogen fluoride?
Has a phase diagram for hydrogen fluoride been published in an article on the internet or in a book ?
Or is there a table for HF for different pressures up to 100 atm. and temperatures up to 500$⁰$ C ...
- 259
0
votes
1
answer
161
views
Why is volume inversely proportional to pressure?
If temprature is directly proportional to volume (Charles's law) and
temperature is directly proportional to pressure (Gay-Lussac's law), then why is pressure and volume are inversely proportional?
-1
votes
1
answer
28
views
CO and H2 gas converting to methane question [closed]
Why is it when you heat and pressurize CO and H2 it converts to methane? Is it because when you heat the molecules the bonds get weaker and the pressure breaks the bonds and allows them to flow and ...
- 11
1
vote
2
answers
833
views
How can I find the Van der Waals constants (a and b) without any critical values?
I'm given a container of gas that is kept at constant temperature, and whose volume is decreased by applying pressure, from A to E, as the graph shows. I am given the temperature, the total moles in ...
-1
votes
1
answer
803
views
Why is the rate of effusion of a gas inversely proportional to (absolute) temperature? [duplicate]
(iv) Rate of effusion of a gas: The rate of passing of a gas through an orifice may be given as:
$$r = \frac{PA}{\sqrt{2\pi RTm}}$$
where
$P = $ Partial pressure of the gas
$A = $ Area of cross-...
- 50
4
votes
1
answer
691
views
Detecting trash (plastic) burning smoke with sensors [closed]
I’m not a chemist, but a software engineer. I’m trying to build a device that could detect if someone is burning trash (mostly plastics and similar materials) vs wood or diesel. At my disposal I have ...
- 151
0
votes
1
answer
66
views
What is the cause of decrease in volume of gaseous mixture in the following problem? [closed]
I am studying Gaseous State.
The problem says: A mixture of gas contains $\ce{N2}$ and $\ce{C2H2}$. $\pu{20 \\mL}$ of this mixture is added to $\pu{70\\mL}$ of $\ce{O2}$ and combustion is allowed to ...
2
votes
1
answer
573
views
Vapour pressure of a solute obtained during eudiometric analysis of methane combustion
Problem
In a eudiometer $\pu{14 ml}$ of $\ce{CH4}$ and $\pu{38.5 ml}$ of $\ce{O2}$ was introduced. After explosion and cooling to initial temperature ($\pu{23 °C}$) the volume of eudiometer was found ...
- 1,047
2
votes
0
answers
574
views
Calculating phase diagram of mixed component natural gases (Bubble and Dew points)
I'm developing a piece of software which calculates and plots the Phase diagram (PT) for a mixed component natural gas.
For reference I have a common used natural gas plotted using a commercial ...
- 171
4
votes
2
answers
439
views
Predicting pressure inside a container based on temperature
I'm a mathematician and computer scientist, and for this particular problem I would benefit from some chemical expertise.
Suppose I fill a container up with some liquid propane. I believe this is ...
- 43
2
votes
0
answers
73
views
Feasibility of application of Boyle's law in the case of varying number of moles [closed]
While reading up on ideal gases and the Boyle's law, I encountered a question in my textbook wherein a balloon was being filled with helium (assumed to be ideal) till it was just about to burst. The ...
