What is the effect of the following on the rate of diffusion?
$(i)$ Temperature
$(ii)$ Density of liquid

(N/A) $(i)$ The rate of diffusion increases with an increase in temperature. This occurs because the kinetic energy of the particles increases as temperature rises.
$(ii)$ The rate of diffusion is higher for a liquid that has a lower density,as particles can move more freely through a less dense medium.