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Which mechanism causes increased surface tension when additional hydrogen bonds form in water?

A)Increased cohesive molecular dipole attraction
B)Decreased solvent-solute kinetic repulsion
C)Increased entropic thermal volume expansion
D)Decreased Van der Waals surface disruption

💡 Explanation

Surface tension increases due to increased cohesive molecular dipole attraction, because hydrogen bond strength in water elevates intermolecular forces at the surface, pulling inward. Therefore, surface tension increases, rather than other phenomena decreasing surface tension.

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