CLASSWORK - Osmotic Pressure LESSON

What is the relationship between molarity and osmotic pressure in a solution?

• Directly proportional

• Inversely proportional

• No relationship

• Exponentially related

Which unit is commonly used to express osmotic pressure?

• Pascal (Pa)

• Molarity (M)

• Atmosphere (atm)

• Kelvin (K)

How do you convert osmotic pressure from atmospheres (atm) to Pascals (Pa)?

• Multiply by 101,325

• Divide by 101,325

• Multiply by 760

• Divide by 760

What is the formula for calculating osmotic pressure?

• Reaction rate

• Gas constant

• Rate of diffusion

• Molar mass

If the osmotic pressure of a solution is 5 atm at 300 K, what is the molarity of the solution? (Assume R = 0.0821 L atm / (mol K))

• 0.203 M

• 2.03 M

• 0.0203 M

• 20.3 M

How can you calculate the molar mass of a solute given the osmotic pressure, temperature, and volume of the solution?

What is the osmotic pressure of a 0.5 M NaCl solution at 298 K? (Assume R = 0.0821 L atm / (mol K) and that NaCl fully dissociates into Na+ and Cl-)

• 12.3 atm

• 24.6 atm

• 49.2 atm

• 6.15 atm

Which of the following factors does NOT affect the osmotic pressure of a solution?

• Temperature

• Volume of the solution

• Molar mass of the solute

• Molarity of the solution

How would the osmotic pressure change if the molarity of the solution is doubled?

• It would double

• It would halve

• It would quadruple

• It would remain the same