Enthalpy of Solution — Quiz Answers

10 verified answers3 views
2
Free Preview

Which statement best describes the change that is associated with the enthalpy of solution?

A
Each step of the process is endothermic when the enthalpy of solution is positive.
B
Two steps of the process are exothermic, and one step is endothermic.
C
Each step of the process is exothermic when the enthalpy of solution is negative.
D
Two steps of the process are endothermic, and one step is exothermic.
4

Which formula can be used to calculate the enthalpy of solution?

A
triangle cap h sub sol is equal to triangle cap h sub solute minus triangle cap h sub solvent
B
triangle cap h sub sol is equal to triangle cap h sub solute plus triangle cap h sub solvent plus triangle cap h sub mix
C
triangle cap h sub sol is equal to triangle cap h sub solute plus triangle cap h sub solvent
D
triangle cap h sub sol is equal to triangle cap h sub solvent plus triangle cap h sub solvent plus triangle cap h sub solute
5

What is the notation for the enthalpy of solution?

A
triangle cap h sub Sol
B
negative cap h sub Sol
C
triangle cap e
D
plus cap h sub Sol
8

Which statement includes all the steps in the change that is associated with the enthalpy of solution?

A
solute separation, solvent separation, and then mixing
B
solute separation and mixing
C
reaction of reactants to form products.
D
solute and solvent mixing and then separating
9

Which statement defines the enthalpy of solution?

A
the difference in characteristics between reactants and products
B
the total number of particles in a solution
C
the change in energy when one substance dissolves in another
D
the phase change from a solid to a liquid
10

The triangle cap h sub sol for NaF is 82 kJ/mol , and the lattice energy is negative 923 kJ/mol If the hydration enthalpy of sodium is 21 kJ/mol more than the hydration enthalpy of fluoride, what are the hydration enthalpies for the sodium and fluoride ions? Use triangle cap h sub sol is equal to negative triangle cap h sub lat plus triangle cap h sub hydr

A
sodium: negative 389 kJ/mol ; fluoride: negative 410 kJ/mol
B
sodium: negative 841 kJ/mol ; fluoride: negative 862 kJ/mol
C
sodium: negative 410 kJ/mol ; fluoride: negative 431 kJ/mol
D
sodium: negative 431 kJ/mol ; fluoride: negative 410 kJ/mol

Did you find these answers helpful?