I Using Henry's law to calculate ammonia concentration?

AI Thread Summary
To calculate the ammonia concentration in a closed chamber above a 5% ammonia solution at 40°C, understanding vapor pressure is essential. The discussion emphasizes the need to apply Henry's law, which relates the concentration of a gas in a liquid to its partial pressure in the gas phase. Participants suggest researching vapor pressures and provide links to relevant resources for further education. There is a request for a straightforward explanation or calculation method, indicating a lack of familiarity with the topic. Overall, the thread highlights the importance of foundational knowledge in vapor pressures for accurate calculations.
Hopper295
Messages
3
Reaction score
0
TL;DR Summary
How do I calculate the concentration of ammonia in air above a ammina solution of a known concentration
We have a closed chamber of 20 liters. The bottom of this chamber is filled with ammonia solution of 5% (=2,7M/liter). The solution temperature is controlled at 40°C

I would like to calculate the concentration of ammmonia in the chamber air, above the solution. It should be something with henry's law but I don't knwo how to do this...
An approximation would allready be super...

Hope someone can help me, thanks!
 
Physics news on Phys.org
You'll want to learn about the concept of vapour pressures first.
 
Hi dr. nate,

To be honest I don't know much about this... :rolleyes:

can you explain some more what you mean?
 
Ok thanks. I was already trying to do it myself using googel, but this doesn't go so well.
I was actually hoping someone would find this easy and show me how to do it.
 
Thread 'Gauss' law seems to imply instantaneous electric field'
Imagine a charged sphere at the origin connected through an open switch to a vertical grounded wire. We wish to find an expression for the horizontal component of the electric field at a distance ##\mathbf{r}## from the sphere as it discharges. By using the Lorenz gauge condition: $$\nabla \cdot \mathbf{A} + \frac{1}{c^2}\frac{\partial \phi}{\partial t}=0\tag{1}$$ we find the following retarded solutions to the Maxwell equations If we assume that...
Maxwell’s equations imply the following wave equation for the electric field $$\nabla^2\mathbf{E}-\frac{1}{c^2}\frac{\partial^2\mathbf{E}}{\partial t^2} = \frac{1}{\varepsilon_0}\nabla\rho+\mu_0\frac{\partial\mathbf J}{\partial t}.\tag{1}$$ I wonder if eqn.##(1)## can be split into the following transverse part $$\nabla^2\mathbf{E}_T-\frac{1}{c^2}\frac{\partial^2\mathbf{E}_T}{\partial t^2} = \mu_0\frac{\partial\mathbf{J}_T}{\partial t}\tag{2}$$ and longitudinal part...
Back
Top