does the mean molecular speed chnage as much as the temperature as the water heats up? explain please help

Explanation:

When water is heated up then its molecules move rapidly from one place to another. Hence, kinetic energy of the molecules tend to increase.

Also,   K.E =

where, T = temperature

Therefore, more is the increase in temperature more will be the mean molecular speed change in the water molecules.

As a result, mean molecular speed change increases with increase in temperature and vice-versa.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.