Wastewater discharged into a stream by a sugar refinery contains 3.40 g of sucrose (c12h22o11) per liter. a government-industry project is designed to test the feasibility of removing the sugar by reverse osmosis. what pressure must be applied to the apparatus at 20.°c to produce pure water?

The pressure that must be applied to the apparatus is 0.239 atm

Explanation:

To calculate the osmotic pressure, we use the equation for osmotic pressure, which is:

or,

where,

= osmotic pressure of the solution

i = Van't hoff factor = 1 (for non-electrolytes)

= mass of sucrose = 3.40 g

= molar mass of sucrose = 342.3 g/mol

= Volume of solution = 1 L

R = Gas constant =

T = temperature of the solution =

Putting values in above equation, we get:

Hence, the pressure that must be applied to the apparatus is 0.239 atm