Osmotic Pressure
Chapter 14-10
	Dr. Robert Belford & Xiaomin Tu

Question 1

What is the osmotic pressure of a solution made by adding 9.0g of glucose, C₆H₁₂O₆, to enough water to make 250ml solution at 25⁰C?

(A) 0.8atm

(B) 1.5atm

(C) 4.89atm

(D) none

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Question 2

The osmotic pressure of blood is 7.5atm at 37⁰C. How many grams of glucose should be used per liter to make an intravenous injection that has the same osmotic pressure as blood?

(A) 53.04g

(B) 64.05g

(C) 72.88g

(D) none

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Question 3

What is the osmotic pressure of 0.0015M of NaCl at 25⁰C?

(A) 0.012atm

(B) 0.024atm

(C) 0.074atm

(D) none

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Question 4

For a particular reverse osmosis system you need to add twice the osmotic pressure in the reverse direction to desalinate water. What is the minimum pressure required to desalinate 1.0M NaCl solution at 25⁰C?

(A) 12.5atm

(B) 24.5atm

(C) 98atm

(D) none

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Question 5

What is the osmotic pressure of a 0.25M urea solution that is isotonic with seawater at 4⁰C?

(A) 5.7atm

(B) 7.5atm

(C) 8.0atm

(D) none

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Question 6

The osmotic pressure of a tryptophan solution is 103.5torr at 25⁰C. If the solution has a density of 1.136g/L, what is the molar mass of the amino acid?

(A) 56g/mol

(B) 102g/mol

(C) 204g/mol

(D) none

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