Question

what change to temperature would increase the rate of diffusion?
decreasing temperature
increasing temperature
temperature has no effect on the rate of diffusion

Explanation:

To determine the temperature change that increases diffusion rate, we recall the kinetic theory: higher temperature means particles have more kinetic energy, move faster, and thus diffuse quicker. Decreasing temperature slows particles, and temperature does affect diffusion (so the third option is wrong). So increasing temperature increases diffusion rate.

Answer:

B. Increasing temperature (assuming the options are labeled as A: decreasing temperature, B: Increasing temperature, C: temperature has no effect on the rate of diffusion)