Question

Which of the following solutes will have the lowest vapor pressure in a 0.200 m solution?

1) Sodium chloride (NaCl)
2) Glucose (C₆H₁₂O₆)
3) Ethanol (C₂H₅OH)
4) Sucrose (C₁₂H₂₂O₁₁)

Answer 1

Sucrose will have the lowest vapor pressure in a 0.200 m solution.

Step-by-step explanation:

The solute with the lowest vapor pressure in a 0.200 m solution would be Sucrose (C₁₂H₂₂O₁₁). The decrease in vapor pressure is proportional to the concentration of dissolved particles in the solution. Sucrose does not dissociate into ions like NaCl, glucose, and ethanol. Therefore, it will have the lowest vapor pressure.