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anonymous
 one year ago
1. Determine the osmotic pressure of a solution that contains 0.020 g of a hydrocarbon solute (molar mass = 340 g/mol) dissolved in benzene to make a 350mL solution. The temperature is 20.0°C.
A)3.1 torr
B)1.0 torr
C)2.9 torr
D)0.21 torr
E)1.4 torr
2. Which of the following solutions would have the highest osmotic pressure?
A)0.2 M C6H12O6, glucose
B)0.15 M MgBr2, magnesium bromide
C)0.2 M CH3OH, methanol
D)0.2 M C12H22O11, sucrose
E)0.15 M KBr, potassium bromide
anonymous
 one year ago
1. Determine the osmotic pressure of a solution that contains 0.020 g of a hydrocarbon solute (molar mass = 340 g/mol) dissolved in benzene to make a 350mL solution. The temperature is 20.0°C. A)3.1 torr B)1.0 torr C)2.9 torr D)0.21 torr E)1.4 torr 2. Which of the following solutions would have the highest osmotic pressure? A)0.2 M C6H12O6, glucose B)0.15 M MgBr2, magnesium bromide C)0.2 M CH3OH, methanol D)0.2 M C12H22O11, sucrose E)0.15 M KBr, potassium bromide

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.01. PV=nRT 2. Osmotic pressure=molarity multiplied by the number of ionic element. Ex: NaCl has 2 \[Na ^{+}, Cl ^{}\] \[AlCl _{3} \] has 4 ions \[Al ^{3+},Cl ^{},Cl ^{}, Cl ^{}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The equation is not working for me, but do you understand?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0P is pressure in atm V is volume in liters n is the number of moles R is a constant which is 0.082 Temperature is in Kelvin.

aaronq
 one year ago
Best ResponseYou've already chosen the best response.1The formula for osmotic pressure is: \(\huge \sf\Pi=iMRT \) \(\sf \Pi\) is Osmotic pressure \(\sf i\) is the van't hoff constant \(\sf M\) is molarity \(\sf R\) is the gas constant \(\sf T\) is the absolute temperature

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorry, I meant to wrote osmotic pressure formula for this problem. We do not need to know the temperature or r because they are the same.

aaronq
 one year ago
Best ResponseYou've already chosen the best response.1For 2. you dont need it  clearly it's dependent on \(i\), but for 1. you do need to use the whole formula including the temperature.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes, I referred to 2 only since that is the one asking for osmotic pressure.

aaronq
 one year ago
Best ResponseYou've already chosen the best response.1#1. is asking about osmotic pressure... "1. Determine the osmotic pressure of a solution.."

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh yea but still. I said to use PV=nRT for problem 1 meaning temperature would be used. I never mentioned temperature or gas constant for the problem 2 because I forgot to put it there.
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