Chem Unit 9 Review

Water is an excellent solvent because

• it is a covalent compound.

• it is a nonconductor of electricity.

• its molecules are quite polar.

• it is a clear and colorless liquid.

Two liquids are likely to be immiscible if

• both have polar molecules.

• both have nonpolar molecules.

• one is water and the other is an alcohol.

• one is polar and the other is non polar.

The solubility of a gas in a liquid would be increased by

• the increase in the gas's partial pressure.

• the addition of an electrolyte.

• the addition of an emulsifier.

• the agitation of the solution.

Which of the following types of compounds is most likely to be a strong electrolyte?

• a polar compound.

• an ionic compound.

• a nonpolar compound.

• a covalent compound.

A saturated solution can become supersaturated under which of the following conditions?

• It contains electrolytes.

• The solution is heated and then allowed to cool.

• More solvent is added.

• More solute is added.

Molarity is expressed in units of

• liters of solution per mole of solute.

• moles of solute per liter of solution.

• moles of solute per liters of solvent.

• liters of solvent per mole of solute.

Tags

NGSS.HS-PS1-5

What mass of NaOH is contained in 2.5 L of a 0.010 M solution?

• 0.010 g

• 1.0 g

• 2.5 g

• 0.40 g

Tags

NGSS.HS-PS1-7

Which of the following is false?

• Water dissolves many ionic solutes because of its ability to hydrate ions in solution.

• Many solids dissolve more quickly in a cold solvent than a warm solvent.

• As temperature increases, the solubilities of some solids increases while others decrease.

• Gasses are generally more soluble in water under high pressure.

Tags

NGSS.HS-PS3-4

Which of the following is not a colligative property?

• vapor-pressure lowering

• boiling-point elevation

• Freezing point depression

• molality

Which of the following would have the largest impact on melting point if dissolved in water?

• glucose

• sodium chloride

• potassium chloride

• calcium chloride

Tags

NGSS.HS-PS1-3