How Does the Concentration Ratio of Nitrogen to Hydrogen Change with Altitude?

In summary, the conversation discusses solving a problem from Irodov book that asks about the concentration ratio of nitrogen and hydrogen with varying altitude and constant temperature. The conversation also mentions using Dalton's Law to find the pressure of two different gases. The conversation ends with the acknowledgement of forgetting about Dalton's Law and thanking haruspex for reminding.
  • #1
jaumzaum
434
33
I was trying to solve a problem from Irodov book that asked how the concentration ratio of nytrogen and hydrogen varies with the altitude (initial ratio = n0), considering the temperature to be constant.

If there was only one gas,

http://img543.imageshack.us/img543/664/77110068.png

dP = -dm g/A
dP = -dV ρ g/A
dP = -dh ρ g
dP = -dh PMg/RT
dP/P = -Mg/RT dh
P = P0e-hMg/RT

Where:
P0 is initial pressure
M is molar mass
ρ is density

But how would it work for 2 different gases?
 
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  • #2
Dalton's Law? Could it be that simple?
 
  • #3
haruspex said:
Dalton's Law? Could it be that simple?


Thanks haruspex, I had completely forgot the Dalton's Law :'(
Don't know where my head was
 

FAQ: How Does the Concentration Ratio of Nitrogen to Hydrogen Change with Altitude?

What is the IRODOV thermodynamics problem?

The IRODOV thermodynamics problem is a famous physics problem that is commonly used to test students' understanding of thermodynamics concepts. It involves a system of connected cylinders filled with different gases at different temperatures and asks for the final temperature of the system after equilibrium is reached.

Why is the IRODOV thermodynamics problem challenging?

The IRODOV thermodynamics problem is challenging because it requires a deep understanding of thermodynamics principles, such as the first and second laws of thermodynamics, the ideal gas law, and the concept of thermal equilibrium. It also involves complex calculations and requires critical thinking to determine the correct approach to solving the problem.

What are some common strategies for solving the IRODOV thermodynamics problem?

Some common strategies for solving the IRODOV thermodynamics problem include using the first and second laws of thermodynamics, applying the ideal gas law, and using the concept of thermal equilibrium to set up and solve equations. Additionally, breaking down the problem into smaller, more manageable parts can also be helpful in finding the solution.

How can I prepare for the IRODOV thermodynamics problem?

To prepare for the IRODOV thermodynamics problem, it is important to have a solid understanding of thermodynamics principles and equations. Practice problems and previous exams can also be helpful in familiarizing yourself with the problem format and common strategies for solving it.

Are there any tips for solving the IRODOV thermodynamics problem more efficiently?

One tip for solving the IRODOV thermodynamics problem more efficiently is to draw a diagram or make a table to visualize the problem and keep track of known and unknown variables. It is also helpful to check your calculations and units as you go to avoid mistakes. Lastly, breaking down the problem into smaller steps and checking your answer against the expected result can also improve efficiency.

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