F2 5.2 Solubility and rate of solubility

Which of the following would NOT increase the rate at which a sugar cube dissolves?

• Reducing the amount of solvent

• Crushing the sugar cube

• Stirring the solution

• Heating the solvent

Which of the following would dissolve the slowest?

• a sugar cube in hot water
• a sugar cube in cool water
• powdered sugar in cool water
• powdered sugar in hot water

Which of the following would result in being able to dissolve a greater amount of solid in a solution?

• Lower the temperature.

• Decrease the pressure of the solution.

• Increase the pressure of the solution.

• Heat the solution.

Stirring the solution...

• decrease the rate of solubility

• Doesn't change the rate of solubility

• increase the rate of solubility

• None of the above

When you measure how fast a solute dissolves, you are measuring the

• amount of dissolving

• rate of particle movement

• amount of particle movement

• rate of solubility

The smaller the particle size results in a....

• increase in solubility

• decrease in solubility

• decrease in surface area

• increase in bond strength

In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

• stir the powder in the liquid
• freeze the mixture
• add more powder to the liquid
• store the mixture in a dark place

Which of the following does not affect the solubility of a solute in a solvent?

• The rate of stirring

• The size of the solute

• The temperature of the solvent

• The amount of the colloid added

Sugar dissolves faster in hot tea compared to iced tea.

What is the factor affecting the rate of solubility in the statement above?

• Rate of stirring

• Temperature

• Size of solute

• Total surface area

What is the meaning of solute?

Apakah maksud zat terlarut?

• the substance that dissolves in a liquid.

  bahan yang melarut di dalam cecair

• a liquid that is used to dissolve a substance

  cecair yang digunakan untuk melarutkan sesuatu bahan

• mixture that is formed when a substance dissolves in a liquid

  campuran yang terbetuk apabila sesuatu bahan larut dalam air