Compare the strength of electrostatic forces between molecules in freshwater and saltwater.

Answer 1

I assume you are asking to compare the strength of H2O molecules in fresh water vs between H2O molecules in sail water.
The boiling point of salt water solution is greater than the boiling point of pure water. This shows the forces between molecules is greater in salt water since it takes more energy to change from a liquid state to a vapor state in salt water.