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Which of the following liquid substances would you expect to have the lowest surface tension? And why? what intermolecular forces present in each?

a. Pb
b. CH3OCH3
c. HOCH2CH2OH
d. H2O
e. CH3CH2OH

Respuesta :

mnhlabatsi7

Answer:

CH3OCH3

Explanation:

Surface tension is directly proportional to the strength of the inter molecular bonds. So the one with the weakest intermolecular forces will have the lowest surface tension. Lead has the highest intermolecular forces (metallic bonds), water and alcohol have hydrogen bonding which are the second strongest bonds here. CH3OCH3  and HOCH2CH2OH both have London dispersion forces but CH3OCH3 has weaker ones of the two because it is smaller and therefore has the lowest surface tension

pstnonsonjoku

The only intermolecular forces in CH3OCH3 are dispersion forces and dipole - dipole interaction hence it has the lowest surface tension.

Surface tension is the force that makes a liquid surface to behave as if it is a stretched elastic skin. The greater the intermolecular force acting on a liquid surface, the greater the surface tension.

Pb is not a liquid. The intermolecular forces of attraction in HOCH2CH2OH,  H2O,  CH3CH2OH are;

  • Dispersion forces
  • Dipole - dipole interaction
  • Hydrogen bond

The only intermolecular forces in CH3OCH3 are dispersion forces and dipole - dipole interaction hence it has the lowest surface tension.

Learn more: https://brainly.com/question/6284546

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