colligative properties of solution

Acetic acid is a weak electrolyte because it

• is miscible with water.

• forms hydronium ions in aqueous solutions

• lowers the freezing point of water.

• ionizes only slightly in aqueous solution.

Which of the following is not a colligative property?

• molality

• vapor-pressure lowering

• boiling-point elevation

• freezing-point depression

Solution A contains 0.1 mol of sucrose, dissolved in 500. g of water. Solution B contains 0.1 mol of sodium chloride, dissolved in 500. g of water. Which fo the following statements about theses solutions is true?

• Both solutions have the same vapor pressure.

• Solution A would boil at a higher temperature than solution B would.

• Solution A would freeze at a higher temperature than solution B would.

• Both solutions would boil at the same temperature.

Using that attached table, which of the following statements is not true?

• All three solutes are nonelectrolytes.

• Solute X could be Ca(NO₃)₂.

• Solute Y could be sucrose.

• Solute Z could be KCl.

Tags

NGSS.HS-PS3-4

Water boils at a lower temperature on Pike's Peak than it does at sea level because

• the atmospheric pressure is lower on Pike's Peak that it is at sea level.

• the atmospheric pressure is higher on Pike's Peak that it is at sea level.

• the heat source is not as hot at higher altitudes.

• the heat source is hotter at higher altitudes, so water boils at lower temperatures.

The boiling point of a solution is ______ the boiling point of the pure solvent.

• higher than
• the same as
• lower than
• higher or lower than

Tags

NGSS.HS-PS3-4

Which technique could increase or speed up the rate of dissolving?

• Allowing the mixture to settle
• Stirring the mixture
• Adding more powder
• Adding more water

Tags

NGSS.HS-PS1-5

The freezing point of a solution is ___________ that of a pure solvent

• more than

• less than

• equal to

The vapor pressure of a pure solvent is ___________ that of a solution

• more than

• less than

• equal to

The boiling point of a solution is ___________ that of a pure solvent

• more than

• less than

• equal to