part 13: OSMOTIC PRESSURE

note: refer to handouts for solutions! :)

7.182 torr

Sample problem: OSMOTIC PRESSURE

Calculate the osmotic pressure (in torr) of unknown substance associated with 5 g weight with a molecular weight of 5,000 g/mol dissolved in water to give 2600 mL of solution at 30.0°C

38,309.8910 g/mol

Sample problem: OSMOTIC PRESSURE

The osmotic pressure of a 250 mL solution containing 21.4g of unknown polymer is 0.055 atm at 300K. Estimate the average molecular weight of the polymer?

20,440.96 mmHg

Sample problem: OSMOTIC PRESSURE

What is the osmotic pressure of 0.55M NaCl at 25oC in units of mmHg?

a. 13.59 atm

b. 25.09 atm

c. 10.78 atm

Sample problem: OSMOTIC PRESSURE

Which solution has a higher osmotic pressure at 25°C

a. 10% glucose solution

b. 3% NaCl

c. 2% ZnCl2