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Osmotic Pressure

Question 19 C...

Question

Question 19
Consider the figure and mark the correct option.

(a) Water will move from side (A) to side (B) if a pressure lower osmotic pressure is applied on pistion (B)
(b) Water wil move from side (B) to side (A) if a pressure greater than osmotic pressure is applied on piston (B)
(c) Water will move from side (B) to side (A) if a pressure equal to osmotic pressure is applied on piston (B)
(d) Water will move from side (A) to side (B) if pressure equal to osmotic pressure is applied on piston (A)

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Solution

(b) We know that, if a pressure higher than the osmotic pressure is applied on the solution. The solvent will flow from the solution into the pure solvent through the semi-permeable membrane. This process is called reverse osmosis.
Thus, in this case, water will move from side (B) to side (A) if a pressure greater than osmotic pressure is applied on piston (B).

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Similar questions

Q. Consider the following statements:

I. Osmotic pressure is the external pressure that must be applied to a pure solvent to prevent osmosis.
II. Osmotic pressure is proportional to the molarity.
III. Osmotic pressure is a colligative property.

Choose the correct statements.

Q. Given figure shows U-shaped tube with two hands A and B separated by a semi-permeable membrane.
(i) Adding solute to the right side lowers the value of

ψ_{s}

causing water to move to the right side of the tube.
(ii) Applying positive pressure to the left side decreases the value of

ψ_{p}

causing water to move to the right side of the tube,
(iii) applying negative pressure to the left side decreases the value of

ψ_{p}

causing water to move to the right side of the tube.
Which of the given statements is/are true?

Q. Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm and turgor pressure 7 atm. Cell B has osmotic pressure 8 atm and turgor pressure 3 atm. The result will be:

Q. Relative lowering of vapour pressure, osmotic pressure of a solution and elevation in boiling points are _______ (p) properties. Osmosis is the passage of _______ (q) through a semipermeable membrane from a solution of _______ (r) towards a solution of ______ (s). Osmotic pressure is equivalent to mechanical pressure which must be applied on _______ (t) to prevent osmosis.
In the above paragraph p,q,r,s and t respectively are

Q. Assertion :Osmotic pressure is numerically equivalent to the osmotic potential. Reason: Osmotic pressure is the negative pressure applied, while osmotic potential is positive.

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