Answer:
The four rows of data below show the boiling points for a solution with no solute, sucrose (C12H22O11), sodium chloride (NaCl), and calcium chloride (CaCl2) (not in that order). Which boiling point corresponds to calcium chloride?
A. 101.53° C
B. 100.00° C
C. 101.02° C
D. 100.51° C
Which of the following solutions will have the lowest freezing point?
A. 1.0 mol/kg sucrose (C12H22O11)
B. 1.0 mol/kg lithium chloride (LiCl)
C. 1.0 mol/kg sodium phosphide (Na3P)
D. 1.0 mol/kg magnesium fluoride (MgF2)
Which of the following compounds will be most effective in melting the ice on the roads when the air temperature is below zero?
A. sodium iodide (NaI)
B. magnesium sulfate (MgSO4)
C. potassium bromide (KBr)
D. All will be equally effective.
Four different solutions have the following vapor pressures at 100°C. Which solution will have the greatest boiling point?
A. 98.7 kPa
B. 96.3 kPa
C. 101.3 kPa
D. 100.2 kPa
Four different solutions have the following boiling points. Which boiling point corresponds to a solution with the lowest freezing point?
A. 101.2°C
B. 105.9°C
C. 102.7°C
D. 108.1°C
Explanation:
The following are the answers to the different questions:
The four rows of data below show the boiling points for a solution with no solute, sucrose (C12H22O11), sodium chloride (NaCl), and calcium chloride (CaCl2) (not in that order). Which boiling point corresponds to calcium chloride?
A. 101.53° C
Which of the following solutions will have the lowest freezing point?
D. 1.0 mol/kg magnesium fluoride (MgF2)
Which of the following compounds will be most effective in melting the ice on the roads when the air temperature is below zero?
A. sodium iodide (NaI)
Four different solutions have the following vapor pressures at 100°C. Which solution will have the greatest boiling point?
B. 96.3 kPa
Four different solutions have the following boiling points. Which boiling point corresponds to a solution with the lowest freezing point?
D. 108.1°C
