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Cor ionic eq /pid-511048-dt-content-rid-3916397.1/c Fal201 7/REVIEW%20QUESTIONS%

ID: 580221 • Letter: C

Question

Cor ionic eq /pid-511048-dt-content-rid-3916397.1/c Fal201 7/REVIEW%20QUESTIONS%20SAMPLES V New Tab SAMPLE 5 VAPOR PRESSURE DETERMINATION-INTERMOLECULAR FORCES Based on your review of the relationship between vapor pressure and molecular struct ure, and the types of ar forces present in liquids, (a) identify the intermolecular forces present in the following compounds and (b) arrange them in order of increasing vapor pressure at 2 5 °C? Ethyl alcohol, CH;CH2OH Water, H20 Diethyl ether, CH3CH2OCH CHs Bromine, Br2

Explanation / Answer

Ethyl alcohol - Hydrogen bonding

Water - Hydrogen bonding

Diethyl ether - London dispersion forces

Bromine - London dispersion forces

Vapour pressure increasing order

Water < Ethyl alcohol < Bromine < Diethyl ether