Properties of Solutions

Aqueous solutions are best described as

• homogeneous compounds

• heterogeneous compounds

• homogeneous mixtures

• heterogeneous mixtures

An aqueous solution of copper nitrate is poured into a paper filter cone. What passes through the filter paper?

• only the solvent

• both solvent and solute

• only the solute

• neither the solute nor the solvent

A small amount of NaCl is dissolved in water to make a solution. In this solution

• water is the precipitate

• water is the solute

• NaCl is the solvent

• NaCl is the solute

What happens when KBr is dissolved in water?

• Br - ions are attracted to the hydrogen atom of water

• Br - ions are attracted to the oxygen atom of water

• K+ ions are attracted to the hydrogen atoms of water

• no attractions are involved

Tags

NGSS.HS-PS1-3

What change will have the least effect on solubility of a solid?

• increase in temperature

• increase in surface area

• decrease in pressure

• decrease in temperature

Tags

NGSS.MS-PS1-4

A change in pressure has the greatest effect on the solubility of a solution that contains a

• gas in liquid

• solid in liquid

• liquid in a liquid

• liquid in a solid

Which change will decrease the solubility of a gas in water?

• decrease in pressure and decrease in temperature

• decrease in pressure and increase in temperature

• increase in pressure and decrease in temperature

• increase in pressure and increase in temperature

As the pressure of a system is changed from 1 atm to 2 atm, the solubility of which substance will be least affected by which change?

• NaF (s)

• CO2 (g)

• HCl (aq)

• H2O (l)

Under which conditions would carbon dioxide be most soluble in water?

• 20 degrees Celsius and 1 atm

• 20 degrees Celsius and 2 atm

• 10 degrees Celsius and 1 atm

• 10 degrees Celsius and 2 atm

At which temperature would 100 g of liquid water contain the most dissolved nitrogen?

• 20 degrees Celsius

• 15 degrees Celsius

• 10 degrees Celsius

• 5 degrees Celsius