Chapter 9

K2SO4(s)⟶ H2O2K+(aq)+SO42−(aq)

• weak electrolyte

• nonelectrolyte

• strong electrolyte

NH3(g)+H2O(l)⇌ H2ONH4+(aq)+OH−(aq)

• weak electrolyte

• strong electrolyte

• nonelectrolyte

C6H12O6(s)⟶ H2OC6H12O6(aq)

• 
  strong electrolyte

• nonelectrolyte

• weak electrolyte

Which of the following molecules can form hydrogen bonds?

• HI

• NH₃

• BH₃

• CH₄

• NaH

What is the concentration, mass/volume percent (m/v), of a solution prepared from 50. g NaCl and 2.5 L of water?

• 20.% (m/v)

• 0.050% (m/v)

• 5.0% (m/v)

• 
  2.0% (m/v)

• 0.020% (m/v)

A red blood cell will undergo crenation in ________.

• 7% NaCl

• 5% glucose

• 
  3% glucose

• 0.5% NaCl

• 
  water

Lithium chloride has a solubility of 55 g of LiCl in 100 g of H2O at 25 ∘C. Determine if each of the following mixtures forms an unsaturated or saturated solution at 25 ∘C:

adding 5 g of LiClLiCl to 15 g of H2O

• unsaturated

• 
  saturated

Lithium chloride has a solubility of 55 g of LiCl in 100 g of H2O at 25 ∘C. Determine if each of the following mixtures forms an unsaturated or saturated solution at 25 ∘C:

adding 25 g of LiClLiCl to 50. g of H2O

• saturated

• 
  unsaturated

Lithium chloride has a solubility of 55 g of LiCl in 100 g of H2O at 25 ∘C. Determine if each of the following mixtures forms an unsaturated or saturated solution at 25 ∘C:

adding 90 g of LiClLiCl to 150. g of H2O

• saturated

• unsaturated

When some of the sugar added to iced tea remains undissolved at the bottom of the glass, the solution is ________.

• unsaturated

• 
  saturated

• dilute

• nonpolar

• polar