Recent content by Rub3y

I have an ash which is a mix of oxides (Cr2O3, CuO, ZnO, PbO, CdO, NiO, SiO2, MgO, CaO). I am adding phosphoric acid. But as a weak acid, will it react with oxides? If so, are these conversions 100% or more of a equillibrium (partial conversion). I you need more information, be sure to ask.

Excellent idea! Exactly what I needed.

I have a solid ash mix containing oxides(ZnO, NiO, MgO, Cr2O3, etc.) and salts (Na2SO4, K2SO4, apatite, etc.). I am supposed to write all of the reactions with phosphoric acid (should be between 1 and 2 mol/l) and put it in a simulation for mass and energy balances. But since phosphoric acid is...

In a pipeline is an organic stream (mainly benzene and hydrocarbons, 60 m3/h) which contains 11 g/s liquid water. At which temperature will the relative humidity in the pipeline be 10 %? Is this possible to calculate? If not, which extra information would you need?

Okay, that I did know. But there still is water in liquid phase right? So how do I determine how much is in liquid phase, which will cause a relative humidity of 10%? And the extra information, if you need it: The flow is 60 m3/h. There is mainly benzene (around 60 %), but also H2S, NH3 and...

Why would there be no liquid phase? A part of the liquid phase would evaporate, causing a partial pressure of water? And I need to know how much liquid goes through the pipe, which will cause a relative humidity of 10%.

I see what I did wrong. Got it, So partial pressure is 0,12 bar. So what do I do next? Use Raoult's law to get the the mole fraction in the liquid? I thought about using this but it's the same formula as relative humidity (never noticed it until now) so it confused me. Btw I used the other site...

Thanks for the reply! Shouldn't you take the vapor pressure of water at 38 bar (boiling point would be 249 °C at 38 bar -> with Antoine coëfficiënts I can calculate the equilibrium vapor pressure)? The vapor pressure would then be 37,4 bar so the partial pressure of the water (10%) would 3,74...

I need to calculate how much liquid (mass) could cause a relative humidity of 10% in a pipeline. The pressure in the pipeline is 38 barg and the temperature is 105 °C. I calculated the partial pressure of the water which would be 3,74 bar (with formula relative humidity and antoine...