H2S is more volatile than H2O because: H2O (hydrogen bonds) has stronger intermolecular forces than H2S (dipolePdipole interactions) CH3OH is more volatile than H2O because: H2O (two hydrogen bond making dipoles) has stronger intermolecular forces than CH3OH (one hydrogen bond making dipoles) CH3OH is more volatile than CH3CH2OH because: each has one hydrogen bond making dipoles, but CH3CH2OH has more atoms, so it has stronger London dispersion forces (stronger intermolecular forces) 1. each has dipoles that can make hydrogen bonds, but the electronegativity of O in water is higher H2O than the electronegativity of N in ammonia NH3 2. water has stronger intermolecular forces, therefore, requires more energy for vaporization, therefore, the boiling point of water is higher dimethyl ether is nonPpolar, it's intermolecular forces are London dispersion forces ethyl alchohol is polar, its intermolecular forces are hydrogen bonds, which are stronger therefore, ethyl alcohol is less volatile and dimethyl ether is more volatile therefore, ethyl alcohol has a higher boiling point and dimethyl ether has a lower boiling point

chem hw 2-23.docx Point and Vapor Pressure Potatoes and other vegetables often require longer cooking times at higher elevations. Explain why it takes longer to cook something at higher

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Page 1: chem hw 2-23.docx Point and Vapor Pressure Potatoes and other vegetables often require longer cooking times at higher elevations. Explain why it takes longer to cook something at higher

!!H2S!is!more!volatile!than!H2O!because:!H2O!(hydrogen!bonds)!has!stronger!intermolecular!forces!than!H2S!(dipolePdipole!interactions)!!CH3OH!is!more!volatile!than!H2O!because:!H2O!(two!hydrogen!bond!making!dipoles)!has!stronger!intermolecular!forces!than!CH3OH!(one!hydrogen!bond!making!dipoles)!!CH3OH!is!more!volatile!than!CH3CH2OH!because:!each!has!one!hydrogen!bond!making!dipoles,!but!CH3CH2OH!has!more!atoms,!so!it!has!stronger!London!dispersion!forces!(stronger!intermolecular!forces)!!

1. each!has!dipoles!that!can!make!hydrogen!bonds,!but!the!electronegativity!of!O!in!water!!is!higher!H2O!than!the!electronegativity!of!N!in!ammonia!NH3!!

2. water!has!stronger!intermolecular!forces,!therefore,!requires!more!energy!for!vaporization,!therefore,!the!boiling!point!of!water!is!higher!

!!!dimethyl!ether!is!nonPpolar,!it's!intermolecular!forces!are!London!dispersion!forces!ethyl!alchohol!is!polar,!its!intermolecular!forces!are!hydrogen!bonds,!which!are!stronger!therefore,!ethyl!alcohol!is!less!volatile!and!dimethyl!ether!is!more!volatile!therefore,!ethyl!alcohol!has!a!higher!boiling!point!and!dimethyl!ether!has!a!lower!boiling!point!!!

Enhanced Abutment Scour Studies for Compound · PDF fileEnhanced Abutment Scour Studies for Compound Channels PUBLICATION NO. ... CLEAR-WATER SCOUR: ... Bed elevations for longer ST

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