Chapter 11 Homework Quiz

A  Unsaturated

B  Dilute

C  Supersaturated

D  Concentrated

E  Saturated

A  ethanol, carbon tetrachloride, and benzene

B  carbon tetrachloride and hexane

C  carbon tetrachloride, and formic acid

D  ethanol and carbon tetrachloride

E  ethanol and formic acid

A  CaI2 and KCl

B  CaI2

C  Na3PO4

D  KCl

E  CaI2, KCl and Na3PO4

A  None of these

B  The process is spontaneous because the overall solution upon mixing is more disordered than the pure substances NH4NO3 and water (the entropy factor), even though the overall mixing process is endothermic.

C  The process of separating the ammonium ions from the nitrate ions in the crystal lattice of NH4NO3 (step 1) is exothermic thus favoring a spontaneous process.

D  Steps 1 and 2 are both exothermic and thus the process is spontaneous.

E  The process of separating water molecules from water molecules (step 2) is exothermic thus favoring a spontaneous process.

A  10.0 mm Hg

B  7.19 mm Hg

C  2.84 mm Hg

D  5.61 mm Hg

E  12.8 mm Hg

A  liquid / gas

B  gas / liquid

C  liquid / liquid

D  solid / solid

E  gas / gas

A  Cannot tell from the information provided

B  Exothermic

C  Endothermic

A  The solid undergoes a chemical change by reacting with the water.

B  The heat from the warm water melts the solid, making it a liquid.

C  The solid NaF breaks apart into separate Na and F atoms by interacting with the water molecules.

D  The water molecules surround each ion in the solid NaF, separating the Na ions from the F ions.

E  Nothing happens, because sodium fluoride is insoluble in water.

A  0.50 °C

B  0.25 °C

C  –0.50 °C

D  –1.00 °C

E  –0.25 °C

A  0.15 m Zn(CH3COO)2

B  0.35 m CH4N2O

C  0.16 m BaI2

D  0.10 m Cr2(SO4)3

E  pure water

A  Is the change in boiling point observed when one goes to a higher elevation

B  Occurs only when ionic solids are present

C  Occurs only at sea level

D  Results from a reduction in the vapor pressure of the solution

E  Occurs only for molecular solutes

A  0.698 g

B  0.676 g

C  122 g

D  5.67 g

E  1.02 × 103 g

A  3.5 × 100 atm

B  1.1 × 100 atm

C  7.3 × 10–6 atm

D  3.5 × 100 atm

E  2.9 × 10–1 atm

F  2 × 10–6 atm

A  1.61 m

B  0.0882 m

C  0.0968 m

D  0.00146 m

E  0.0282 m

A  none of these

B  0.35

C  6.3

D  0.056

E  0.17