Osmotic pressure

37 questions on Osmotic pressure from the Solutions and Colligative Properties chapter: 7 NEET level, 15 JEE Main, 15 JEE Advanced. Each one opens with its answer and solution.

• Which of the following aqueous solutions is isotonic with 0.10 M glucose at the same temperature? (Assume ideal behaviour and complete dissociation of electroly... NEET level
• The osmotic pressure of a 0.10 M solution of a non-electrolyte at 300 K is (use R = 0.0821 L atm mol^-1 K^-1) NEET level
• Two solutions of different concentrations are separated by a semipermeable membrane. Net movement of solvent occurs NEET level
• Reverse osmosis can be used to obtain pure water from sea water when the pressure applied on the sea water side is NEET level
• A solution of 4.0 g of a polymer in 500 mL of solution has an osmotic pressure of 0.0985 atm at 300 K (R = 0.0821 L atm mol^-1 K^-1). The molar mass of the poly... JEE Main level
• A 0.9% (w/v) NaCl solution (9.0 g per litre; molar masses NaCl = 58.5, glucose = 180 g mol^-1) is isotonic with a glucose solution at the same temperature. Assu... JEE Main level
• 6.0 g of urea (molar mass 60) and 18 g of glucose (molar mass 180 g mol^-1) are dissolved to make exactly 1.0 L of solution at 27 degC. The osmotic pressure is ... JEE Main level
• Find the osmotic pressure of a 0.25 mol L^-1 solution of a non-electrolyte at 298 K in kPa (nearest integer). Use R = 8.314 J mol^-1 K^-1 and note that 1 L = 10... JEE Main level
• Red blood cells are isotonic with a solution having a total particle concentration of 0.30 mol L^-1. A sample of cells is placed in 0.10 M CaCl2 solution at bod... JEE Main level
• A solution of 0.50 g of a protein in 200 mL of solution has an osmotic pressure of 2.00 torr at 300 K. Using R = 62.36 L torr mol^-1 K^-1, the molar mass of the... JEE Main level
• Which of the following statements about osmosis and osmotic pressure of dilute solutions is/are correct? JEE Main level
• 100 mL of 0.10 M NaCl (assume complete dissociation) is mixed with 100 mL of 0.30 M glucose. Volumes are additive. The osmotic pressure of the mixture at 310 K ... JEE Advanced level
• A 4.0% by mass aqueous solution of sucrose (molar mass 342 g mol^-1, non-electrolyte) has density 1.014 g mL^-1. Calculate its osmotic pressure at 300 K in atm,... JEE Advanced level
• In a simple osmometer a column of solution rises until its hydrostatic pressure balances the osmotic pressure. The solution is 0.0050 mol L^-1 in a non-electrol... JEE Advanced level
• The osmotic pressure of a polymer in a solvent at 300 K was measured at two concentrations: pi = 1.385 x 10^-3 atm at 2.0 g L^-1 and pi = 6.556 x 10^-3 atm at 6... JEE Advanced level
• Two compartments are separated by a rigid semipermeable membrane (permeable to water only) at 300 K: the left side holds 0.10 M NaCl (complete dissociation) and... JEE Advanced level
• Four aqueous solutions at 300 K: (I) 0.10 M glucose, (II) 0.10 M urea, (III) 0.04 M Al2(SO4)3, (IV) 0.15 M NaCl. Assume complete dissociation of electrolytes an... JEE Advanced level
• A non-electrolyte X (15 g L^-1) is isotonic at the same temperature with a solution containing 5.85 g L^-1 NaCl (molar mass 58.5, complete dissociation) and 9.0... JEE Advanced level
• At the same temperature, a 0.05 M solution of NaCl (assume complete dissociation) is isotonic with NEET level
• The osmotic pressure of a 0.020 M glucose solution at 300 K is (use R=0.0821 L atm mol^-1 K^-1) NEET level
• In reverse osmosis used for desalination of sea water, the pressure applied on the sea-water side must be NEET level
• 1.17 g of NaCl (molar mass 58.5 g mol^-1) is dissolved in water to make 500 mL of solution at 300 K. Assuming complete dissociation and R=0.0821 L atm mol^-1 K^... JEE Main level
• A polymer solution containing 0.90 g of polymer in 100 mL of solution has an osmotic pressure of 3.74 torr at 300 K. Using R=0.0821 L atm mol^-1 K^-1 and 1 atm=... JEE Main level
• At the same temperature, what mass of NaCl (molar mass 58.5 g mol^-1, assume complete dissociation) per litre of solution is isotonic with 0.30 M glucose? JEE Main level
• Sea water is modelled as 0.60 M NaCl (complete dissociation) at 298 K. Using R=0.0821 L atm mol^-1 K^-1, the minimum external pressure that must just be exceede... JEE Main level
• The osmotic pressure of a solution is 2.0 atm at 27 degC. If the concentration is unchanged (no volume change), the osmotic pressure at 127 degC is JEE Main level
• Calculate the osmotic pressure at 310 K of a 0.150 M aqueous glucose solution. Use R=8.314 J mol^-1 K^-1 with concentration in mol m^-3. Give the answer in kPa,... JEE Main level
• A 0.10 M solution of a binary electrolyte AB (AB <=> A+ + B-) shows an osmotic pressure of 4.43 atm at 300 K. Use R=0.0821 L atm mol^-1 K^-1 and i=1+alpha. Find... JEE Main level
• Which of the following statements about osmosis and osmotic pressure are correct? JEE Main level
• 100 mL of 0.30 M glucose is mixed with 200 mL of 0.15 M NaCl (complete dissociation, volumes additive) at 300 K. With R=0.0821 L atm mol^-1 K^-1, the osmotic pr... JEE Advanced level
• A polymer solution of concentration 2.0 g L^-1 at 300 K supports a column of solution rising by 1.02 cm above the solvent in an osmometer. Take solution density... JEE Advanced level
• A 0.040 M solution of K3[Fe(CN)6] is 70% dissociated (K3[Fe(CN)6] -> 3K+ + [Fe(CN)6]^3-; use i=1+(n-1)alpha). At the same temperature, what mass of glucose (mol... JEE Advanced level
• Benzoic acid dimerises in benzene to the extent alpha=0.60 in benzene (2A <=> A2; use i=1-alpha/2). A solution has stoichiometric concentration 0.020 mol L^-1 o... JEE Advanced level
• A 0.10 M sucrose solution is hydrolysed 60% at 300 K to glucose and fructose (C12H22O11 + H2O -> C6H12O6 + C6H12O6; assume no change in volume or in the amount ... JEE Advanced level
• The following solutions are at the same temperature (complete dissociation assumed): S1 0.12 M glucose, S2 0.060 M NaCl, S3 0.040 M Na2SO4, S4 0.050 M K3PO4. Wh... JEE Advanced level
• Sea water is modelled as 0.50 M NaCl (complete dissociation) at 300 K, with R=0.0821 L atm mol^-1 K^-1. It is subjected to reverse osmosis. Which statements are... JEE Advanced level
• Each of the following is a 0.10 M solution at 300 K. With R=0.0821 L atm mol^-1 K^-1, which have an osmotic pressure greater than 4.0 atm? (For pi=iCRT use i=1+... JEE Advanced level