Phys Pharm Colligative Properties Quiz

What is the vapor pressure of an aqueous solution that has a solute mole fraction of 0.20? The vapor pressure of the pure liquid is 26 mm of Hg at 25 °C?

20.8 mm Hg

Within a series of chemically related compounds, as dipole moment increases, their water solubility (one word; rhymes with fleeces) 

Increases

Calculate the molarity of D5W (5% W/V dextrose solution; MW = 198.2). Choose all that apply.  

0.252 M

252 millimoles/lt

While discussing  the States of Matter, we talked about the importance of avoiding unnecessary exposure to anti-cancer drugs like cyclophosphamide, which is a liquid at room temperature. Which of the following properties contribute to this drug’s exposure hazard?

Vapor pressure

Van't Hoff's equation for freezing point change is expressed as : ∆Tfp = i∗Kfp∗m. With reference to this equation, which of the following statements is accurate:

m equals molality of the solute

According to Raoult's law, as the concentration of a non-volatile solute in a solution increases,

Vapor pressure of the solution decreases

It is impossible for an orally consumed drug to be effective if it does not have any water solubility

True

Which of the following compounds, when dissolved in water, will produce the greatest freezing point depression

MgCl2

Which of the following is true regarding colligative properties?

They depend on the number of solute particles.

You prepared the following solutions at room temperature: 1 M dextrose solution, 1 M NaCl solution, 1M MgCl2 solution, 2 M dextrose solution. Assuming complete ionization of salts, which of the following statements is TRUE?

2 M dextrose solution has the same osmotic pressure as 1 M NaCl solution

The freezing point of a solution is always:

Lower than that of the pure solvent

Which of the following is NOT a property of pure water?

Osmotic pressure