Question

Which of the following aqueous solutions will have the lowest vapor pressure at 25 degrees Celsius?

1.0 M Fe(NO3)3
1.0 M C6H12O6
1.0 M KNO3
1.0 M CaCl2

Answer 1

A

Answer 2

Solute A produces 4 moles of ions per mole of solute

Answer 3

Vapor pressure decreases as the number of particles in solution increases

Answer 4

What do the others produce? @Matt6288

Answer 5

Solute B produces 1 mole of particles per mole of solute, since C2H12O6 is a non-electrolyte
Solute C produces 2 moles of ions per mole of solute. KNO3 --> K^+ + NO3^-
Solute D produces 3 moles of ions per mole of solute. CaCl2 --> Ca^2+ + 2Cl^-

Answer 6

how do you know it produces that much? @Matt6288