Skip to main content

Questions tagged [pressure]

For questions about gas pressure, or the effect of pressure in general on chemical species, substances, or reactions.

Filter by
Sorted by
Tagged with
3 votes
1 answer
483 views

Osmolarity and osmotic pressure

You have discovered a new strain of bacteria called Tankeromyces subtilis that has a special outer membrane that is capable of withstanding high levels of osmotic pressure. These bacteria can survive ...
Michael's user avatar
  • 43
16 votes
1 answer
35k views

What is the difference between the units 'torr' and 'mm of Hg'?

According to present definition torr and mm of Hg differ though slightly. I am still confused over it. Can someone write an explicit answer differentiating between them and the reason for ...
dsinghvi's user avatar
  • 1,804
1 vote
2 answers
1k views

How can you achieve negative pressure?

Pressure is the magnitude (absolute value) of the force over the area, so how can that result in a negative value for pressure as would happen in certain circumstances?
user11111's user avatar
1 vote
4 answers
15k views

How do I calculate the pressure of a known liquid in a sealed container heated above boiling point?

If I have water in a sealed container heated to say 150 degrees, how do I determine the amount of pressure being generated in the container? What about for other liquids? I have searched extensively ...
Tyler's user avatar
  • 11
7 votes
1 answer
703 views

Bicycle tube inflation with 16g CO2 cartridge

How much pressure will a 16 gram cartridge of $\ce{CO2}$ (carbon dioxide) provide in a bicycle tire? Remembering my high school chemistry (forty years ago) and googling, I came up with this answer: ...
Craig Wright's user avatar
1 vote
1 answer
374 views

How will the pressure of a gas in manometer change if it goes to a place with higher pressure?

Imagine a manometer where air pressure is $\pu{0.8 atm}$ and the gas pressure is more. We move it to sea level which the air pressure is $\pu{1 atm}$. How will the gas pressure change? (the ...
hojat's user avatar
  • 11
4 votes
2 answers
2k views

Why does the cathode ray tube only start glowing at low pressures?

I am considering the cathode ray tube of the set up, when the cathode rays were discovered: Voltage = very high Gas = any Atmospheric Pressure = changing At different pressures, there are different ...
Daksh Shah's user avatar
1 vote
2 answers
5k views

What does negative pressure mean in the context of this manometer?

I have a basic question on a closed manometer: I see that in this case the pressure of gas is lower than that of the liquid, which is why the liquid is higher on the left side. Now, what I don't ...
copper's user avatar
  • 231
2 votes
1 answer
2k views

Calculating the equilibrium constants for parallel reactions

So, I am attempting to calculate the equilibrium constant for two separate reactions. $$\ce{A + B<=>C + D}$$ $$\ce{A + B <=> C + E}$$ I have figured out the final pressures at equilibrium ...
Alex's user avatar
  • 23

1
3 4 5 6
7