Question

Why does surface tension increase with increasing salinity?

Answer 1

Answer:

I don't know .

Explanation:

But please make me as brainlist.

Answer 2

It happens due to solute depletion.

• Due to solute depletion at direct interface, adding a solute to a suitable solvent will typically cause a gradual increase in surface tension, like salt in water
• Electrostatic forces or solute solvent attraction causes solute to repel from the interface. Water molecules bind tightly to specific ion due to their possible charge and respond to each other more intensely.
• Thus, adding salt to water supports a network of intermolecular bonds. Surface tension is naturally determined by intermolecular bonds, so stronger intermolecular bonds result in higher surface tension.