Rates of Dissolution

What are the factors that affect the rate of dissolution?

• pH, viscosity, and conductivity

• Time, density, and mass

• Temperature, surface area, agitation, concentration, and the nature of the solute and solvent.

• Pressure, color, and volume

Tags

NGSS.HS-PS1-5

How does temperature affect the rate of dissolution?

• Temperature affects the rate of dissolution by increasing or decreasing the kinetic energy of the solvent molecules, which affects the frequency of collisions with the solute.

• Temperature decreases the frequency of collisions between solvent and solute

• Temperature only affects the solute, not the solvent

• Temperature has no effect on the rate of dissolution

Tags

NGSS.HS-PS1-5

Explain the effect of surface area on the rate of dissolution.

• Surface area has no effect on the rate of dissolution.

• The rate of dissolution decreases with an increase in surface area.

• The rate of dissolution increases with an increase in surface area.

• The rate of dissolution remains constant regardless of surface area.

What is the impact of stirring on the rate of dissolution?

• Stirring causes the substance to solidify instead of dissolve.

• Stirring decreases the rate of dissolution.

• Stirring increases the rate of dissolution.

• Stirring has no impact on the rate of dissolution.

Define solubility and explain its relationship with the rate of dissolution.

• Solubility is the ability of a substance to solidify in a solvent, while the rate of dissolution refers to how quickly a solute solidifies in a solvent.

• Solubility is the ability of a substance to dissolve in a solvent, while the rate of dissolution refers to how quickly a solute dissolves in a solvent.

• Solubility is the ability of a substance to evaporate in a solvent, while the rate of dissolution refers to how quickly a solute evaporates in a solvent.

• Solubility is the ability of a substance to condense in a solvent, while the rate of dissolution refers to how quickly a solute condenses in a solvent.

Tags

NGSS.HS-PS1-5

Which factor has the greatest influence on the rate of dissolution: temperature, surface area, or stirring? Justify your answer.

• Humidity

• Temperature

• Pressure

• Color

Tags

NGSS.HS-PS1-5

What happens to the rate of dissolution when the temperature is increased? Why?

• The rate of dissolution is not affected by temperature.

• The rate of dissolution decreases when the temperature is increased.

• The rate of dissolution remains the same when the temperature is increased.

• The rate of dissolution increases when the temperature is increased.

Tags

NGSS.HS-PS1-5

How does increasing the surface area of a solute affect the rate of dissolution? Provide an example.

• Increasing the surface area of a solute only affects the color of the solution.

• Increasing the surface area of a solute has no effect on the rate of dissolution.

• Increasing the surface area of a solute increases the rate of dissolution.

• Increasing the surface area of a solute decreases the rate of dissolution.

Why does stirring increase the rate of dissolution? Explain with a suitable example.

• Stirring increases the rate of dissolution by adding more solute to the solvent.

• Stirring increases the rate of dissolution by decreasing the contact between the solute and the solvent.

• Stirring increases the rate of dissolution by increasing the contact between the solute and the solvent.

• Stirring increases the rate of dissolution by changing the temperature of the solvent.

Tags

NGSS.MS-PS3-5

How does the solubility of a substance affect its rate of dissolution? Provide an example.

• The solubility of a substance directly affects its rate of dissolution. The more soluble a substance is, the faster it will dissolve.

• The rate of dissolution is determined by the color of the substance

• The less soluble a substance is, the faster it will dissolve

• The solubility of a substance has no effect on its rate of dissolution