Question

select all of the following that lead to an increase in the rate of diffusion

check all that apply

□ increase in temperature

□ more pressure in the system

□ steeper concentration gradient

□ increased water concentrations

Explanation:

• Increase in temperature: Higher temperature gives particles more kinetic energy, so they move faster, increasing diffusion rate.
• More pressure in the system: Increased pressure can force particles to move more, enhancing diffusion (especially in gases/liquids).
• Steeper concentration gradient: A larger difference in concentration means particles have a stronger "drive" to move, speeding up diffusion.
• Increased water concentrations: If water is the solvent, more water (or higher concentration of the diffusing substance in water - depending on context) can increase diffusion as there's more medium for movement, but mainly, the first three are core factors. However, for this question, the correct ones are increase in temperature, more pressure in the system, and steeper concentration gradient (note: "increased water concentrations" is less direct as diffusion rate is more about gradient, temp, pressure; but if the substance diffuses in water, higher water with solute? Wait, no - diffusion rate depends on gradient, temp, pressure, surface area, etc. So the main correct ones here are:

1. Increase in temperature: Correct, as kinetic energy increases.
2. More pressure in the system: Correct, as pressure can push particles.
3. Steeper concentration gradient: Correct, as the driving force is stronger.
4. Increased water concentrations: Not a direct factor (diffusion rate is about the gradient of the diffusing substance, not the solvent's concentration alone). So the correct options are increase in temperature, more pressure in the system, steeper concentration gradient.

Answer:

• increase in temperature
• more pressure in the system
• steeper concentration gradient