Answer to Question #52254 in Physical Chemistry for vi

Question

Which of the following statements is true about compounds and mixtures?
Both mixtures and compounds always contain a fixed proportion of elements by mass.
Unlike compounds, very little or no exchange of energy occurs during the formation of mixtures.
A mixture cannot be easily separated into its constituents while constituents of a compound can be easily separated.
Compounds and mixtures can be separated into its constituents by chemical methods.
5 __________ is the ratio of molar enthalpy of a liquid to its boiling point.
Raoult's law
Enthalpy rule
Trouton’s rule
Entropy rule
6 The temperature at which the vapor pressure of a liquid equals the external pressure is called its _____________.
Boiling point
freezing point
Melting point
Condensation point
7 What law states that the vapor pressure of a solution containing a non-volatile solute is equal to the vapor pressure of pure solvent times the mole fraction of the solvent?
Gay-Lussac’s Law
Raoult's law
Henry's law
Dalton's law

Answer 1

Unlike compounds, very little or no exchange of energy occurs during the formation of mixtures.
Trouton’s rule
Boiling point
Raoult's law