Click, Clack, and Jim Have Identical Icy Driveways

question 134

Multiple Choice

Click, Clack, and Jim have identical icy driveways. Click buys 10 lb of NaCl, Clack buys 10 lb of CaCl₂, and Jim buys 10 lb of MgCl₂. They spread these salts on their driveways. Which driveway will deice more effectively? (Assume that ideal dissociation of the salts occurs, and that colligative properties are the only consideration.)

• A)Click's driveway will deice best.
• B)Clack's driveway will deice best.
• C)Jim's driveway will deice best.
• D)The three driveways will deice to the same extent.
• E)Clack and Jim's driveways will deice better than Click's.