Saturday

October 25, 2014

October 25, 2014

Posted by **Student** on Friday, March 1, 2013 at 9:51pm.

What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.165 M in sodium chloride and 0.029 M in magnesium sulfate? Assume complete dissociation for electrolytes.

I know that the equation for osmosis is

pi= MRT, but how am I supposed to find pressure from that. do I use the r value of 0.018 because it's units include that of atm? Or do I solve for r?

Please help!

- Chem Problem -
**Student**, Friday, March 1, 2013 at 9:52pmNevermind, I figured it out!

**Answer this Question**

**Related Questions**

Chem Problem - I need help solving this question, I have no idea what I'm ...

science; AP Chem - I don't know how to find the kpa for 35.78 m in this question...

engineering - A saturated soil sample under CU test was subjected to a confining...

chem - Nitrogen(75.5 kPa), oxygen (19.2 kPa), carbon dioxide(0.05 kPa) and water...

Chemistry - Here is my question and I,m hoping I worked the problem out ...

physical science - If the absolute pressure of a gas is 550.280 kPa, its gage ...

physics - total normal stresses of 110 and 40 kpa are applied to two planes at ...

chemistry - i keep trying to do these problems and i don't understand them. ...

science; AP Chem - Divers know that the pressure exerted by the water increases ...

math - Atmospheric pressure V decreases as altitude h increases. At a ...