Osmosis and Osmotic Pressure
Chemistry ⇒ Solutions and Colloids
Osmosis and Osmotic Pressure starts at 11 and continues till grade 12.
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A 0.2 M solution of glucose at 27°C (assume R = 0.0821 L atm K-1 mol-1) is separated from pure water by a semipermeable membrane. Calculate the osmotic pressure. (Give answer in atm, rounded to two decimal places.)
A 0.5 M solution of urea and a 0.25 M solution of NaCl are separated by a semipermeable membrane. Which direction will water move?
A plant cell is placed in distilled water. What type of solution is the distilled water relative to the cell sap?
A solution containing 1 g of a non-volatile solute in 100 mL of water produces an osmotic pressure of 2.46 atm at 27°C. Calculate the molar mass of the solute. (R = 0.0821 L atm K-1 mol-1)
A solution is separated from pure solvent by a semipermeable membrane. The solvent flows into the solution. What does this indicate about the relative concentrations?
A solution of 0.1 M KCl and 0.1 M glucose are separated by a semipermeable membrane. Which solution will have higher osmotic pressure?
A solution of 5 g of a polymer in 100 mL of water has an osmotic pressure of 0.2 atm at 300 K. Calculate the molar mass of the polymer. (R = 0.0821 L atm K-1 mol-1)
Define isotonic solutions.
Explain the term 'reverse osmosis' and give one application.
Explain why red blood cells burst when placed in pure water.
Explain why saline solution is used in intravenous drips instead of pure water.
If a cell is placed in a hypertonic solution, what will happen to the cell?
State the formula for osmotic pressure (π) in terms of molarity (C), gas constant (R), temperature (T).
The osmotic pressure of a 0.01 M solution at 298 K is 0.246 atm. What is the value of the gas constant R in L atm K-1 mol-1?
The osmotic pressure of a solution is 1.23 atm at 300 K. If the volume of the solution is 0.5 L and it contains 2 g of solute, calculate the molar mass of the solute. (R = 0.0821 L atm K-1 mol-1)
What is osmosis?
What is the effect of adding a non-volatile solute to a solvent on its osmotic pressure?
What is the effect of temperature on osmotic pressure, assuming all other factors remain constant?
What is the main difference between osmosis and diffusion?
Which property is used to determine the molar mass of large biomolecules like proteins?
