Engineering Board Exam Reviewer · Chemistry · hard
What is the osmotic pressure of a 0.1 M glucose solution at 25 ° C? (R = 0.08206 L· atm/mol· K)
- 0.205 atm
- 2.45 atm
- 4.89 atm
- 247.8 atm
Answer
B. 2.45 atm
Solution
π = MRT = 0.1(0.08206)(298) = 2.45 atm.
More Chemistry questions
- What is the boiling point of a 0.5 m aqueous NaCl solution? Assume complete dissociation. (Kb of water = 0.512 ° C/m)
- What is the freezing point of a 1 m aqueous solution of a nonelectrolyte (e.g., sugar)? (Kf of water = 1.86 ° C/m)
- How many mL of 0.25 M NaOH are needed to neutralize 20 mL of 0.1 M H2SO4? (H2SO4 + 2 NaOH Na2SO4 + 2 H2O)
- How many mL of 0.2 M NaOH are needed to neutralize 25 mL of 0.1 M HCl?
- What is the mole fraction of ethanol ( C2H5OH, M = 46) in a solution of 10 g ethanol and 90 g water? (Use H = 1, C = 12, N = 14, O = 16…
- A 1-liter water sample (1 kg) contains 5 mg of lead. What is the lead concentration in ppm?
- 15 g of sugar is dissolved in 85 g of water. What is the mass percent of sugar in the solution?
- What is the normality of a 0.5 M H2SO4 solution (for complete neutralization)?
- What is the molality of a solution containing 9 g of glucose ( C6H12O6) in 500 g of water? (Use H = 1, C = 12, N = 14, O = 16, Na = 23, S…
- 50 mL of a 4 M solution is diluted to 200 mL. What is the new concentration?