Question

20)Which compound will have the highest surface tenssonr (Awater B) gasoline C) chloroform, CHCI cooking oil 21) Choosing from the intermolecular forces listed, which is the strongest? ATdispersion forces (London or Van der Wals) B) dipole-dipole forces hydrogen bonding PrX-forces rdelta forces ONF 22hWhich compound has the highest boiling point based on its intermolecular forces? AIOCH CHOH BTCH,CH CI HSH CH,CH,CH 23) In the following heating curve, what state is the water at point D? E) so0C (B Time ) gas only By liquid only oY solid only D) liquid and solid gas and liquid eve H2O 24) Which compound would be the least miscible with water? A) HOCH,CH2OH B) CH,CH,CI ISH D) CH,CH2CH H-041 H-5-H H 2 pelar PhotoGrid

Answer 1

20. Water will have the highest Surface tension among these because surface tension depends upon the intermolecular forces of liquid and water has Hydrogen bonding as intermolecular forces.

21.Hydrogen bonding is the strongest intermolecular force.

22. Highest Boiling point is of A) HOCH2CH2OH

This is because It has Hydrogen bonding as intermolecular force.

stronger the intermolecular force its tougher for molecules to escape and require higher temperature hence higher boiling point.

23. At 100°c that is at boiling point, water will have both gas and liquid state.

24. D) CH3CH2CH3 is least miscible in water.

This is because like dissolves like.

That means polar will dissolve polars and Non-polar will dissolve non-polars.

H2O is polar molecule and propane is Non-polar.