Beaker A has 1.00 mol of chloroform, CHCl3, at 27C. Beaker B has 1.00 mol of carbon
Question:
Beaker A has 1.00 mol of chloroform, CHCl3, at 27ºC. Beaker B has 1.00 mol of carbon tetrachloride, CCl4, also at 27ºC. Equal masses of a nonvolatile, nonreactive solute are added to both beakers. In answering the questions below, the following data may be helpful.
| CHCl3 (A) | CCl4 (B) |
Vapor pressure at 278C | 0.276 atm | 0.164 atm |
Boiling point | 0.164 atm | 76.58C |
kb (ºC/m) | 3.63 | 5.03 |
Write <, >, =, or more information needed in the blanks provided.
(a) Vapor pressure of solvent over beaker B ________ vapor pressure of solvent over beaker A.
(b) Boiling point of solution in beaker A ________ boiling point of solution in beaker B.
(c) Vapor pressure of pure CHCl3 ________ vapor pressure of solvent over beaker A.
(d) Vapor pressure lowering of solvent in beaker A ________ vapor pressure lowering of solvent in beaker B.
(e) Mole fraction of solute in beaker A ________ mole fraction of solute in beaker B.