Wastewater discharged into a stream by a sugar refinery contains 3.55 g of sucrose (C₁₂ H₂₂ O₁₁ ) per liter. A government-sponsored study is testing the feasibility of removing the sugar by reverse osmosis. What pressure must be applied to the apparatus at 20. °C to produce pure water?
Answer:
A pressure value more than 0.25 atm must be applied to the apparatus at 20.0°C to produce pure water.
Explanation:
When pressure more than the value of osmotic pressure of the solution is applied to the solution then water will move out from the solution which is termed as reverse osmosis.
Given that 3.55 grams of sucrose was present in 1 L of solution.
Moles of sucrose present in 1 liter of solution = 3.55g/ 342g mol = 0.010380 mol/l
C = 0.010380 mol/l
Temperature of the solution = T = 20.0°C = 20.0+273 K = 293 K
Osmotic pressure of solution = II
II = C RT
II = 0.010380 mol/l * 0.0821 atm L / mol K * 293 K = 0.25 atm
A pressure value more than 0.25 atm must be applied to the apparatus at 20.0°C to produce pure water.
Osmosis is the spontaneous net movement or diffusion of solvent molecules through a selectively-permeable membrane from a area of excessive water potential to a area of low water capacity, in the direction that tends to equalize the solute concentrations on the 2 sides.
What's osmosis in water?
Osmosis is a special kind of diffusion, specifically the diffusion of water throughout a semipermeable membrane. Water effortlessly crosses a membrane down its capability gradient from high to low ability. Osmotic stress is the pressure required to save you water motion across the semipermeable membrane.
What causes osmosis?
Osmosis occurs in line with the attention gradient of water across the membrane, that's inversely proportional to the awareness of solutes. Osmosis happens till the concentration gradient of water is going to 0 or until the hydrostatic pressure of the water balances the osmotic stress.
what's the method of osmosis in a mobile?
Water moves across mobile membranes by using diffusion, in a manner known as osmosis. Osmosis refers in particular to the motion of water throughout a semipermeable membrane, with the solvent (water, as an example) transferring from a place of low solute (dissolved material) concentration to a place of excessive solute awareness.
Learn more about Osmosis here:- https://brainly.com/question/2811191
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