Question

How does the rate of diffusion change with density of liquid and temperature?

Answer 1

#Rate of diffusion in terms of density:
Density means the space between inter-molecular space(tightly or lightly packed). So when density is more means molecular spaces is small. Therefore any substance is to be dissolved in it is difficult.
But, when density is less means molecular spaces is larger then any substance is to be dissolved in it is easy.

#Rate of diffusion in terms of temperature:
If temperature is less then it means molecular is less. So, any substance is to be dissolved in it, it is difficult.
But, if temperature is more then it means molecular space is more. So, any substance is to be dissolved in it, it is easy.

Answer 2

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The rate of diffusion is directly proportional to the temperature, when temperature is increased, the kinetic energy of molecules also increases and they moves faster. In this way the rate of diffusion increases.
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