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Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter9: Liquids, Solids, And Materials
Section: Chapter Questions
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INTERPARTICLE FORCES 127 2. Applying principles of interparticle forces, account for each of the following. (a) Account for the fact that solid KCl crystal does not conduct an electrical current, but when KCI is dissolved in distilled water, the resulting solution has a high degree of electrical conductivity. to (b) True or False-Molecules of methanol, CH,OH, have four sites where hydrogen bonding can occur. Explain. (c) Mineral oil and water do not mix together, but the mineral oil floats on top of the water. (i) What does this tell us about their relative densities? Please be specific. (ii) What does this tell us about their relative interparticle forces? T00 (iii) If red food coloring dissolves in water, but not in mineral oil, what does this tell us about the interparticle forces in the red food coloring? ail abiupil mot adi ba (d) Consider two isomers: trans-2,3-difluoro-2-butene or cis-2,3-difluoro-2-butene on H,C CH, F por/ (P) Eb C=C ro pou C=C eenjea trans-2,3-difluoro-2-butene cis-2,3-difluoro-2-butene (i) Both substances have the same molar mass and similar molecular shapes, but the trans isomer has a lower melting point than the cis form. (ii) Which form, if any, exhibits resonance? Explain. Boiling Point punodwo) Butane, C,H10 (CH,CH,CH,CH,) 1°C 33°C Fluorobutane, CH,FCH,CH,CH3 (e) Butane, C,H10 (CH,CH,CH,CH,), has a boiling point of 1°C, but fluorobutane, CH,FCH,CH,CH, has a boiling point of 33°C. Explain.
Transcribed Image Text:INTERPARTICLE FORCES 127 2. Applying principles of interparticle forces, account for each of the following. (a) Account for the fact that solid KCl crystal does not conduct an electrical current, but when KCI is dissolved in distilled water, the resulting solution has a high degree of electrical conductivity. to (b) True or False-Molecules of methanol, CH,OH, have four sites where hydrogen bonding can occur. Explain. (c) Mineral oil and water do not mix together, but the mineral oil floats on top of the water. (i) What does this tell us about their relative densities? Please be specific. (ii) What does this tell us about their relative interparticle forces? T00 (iii) If red food coloring dissolves in water, but not in mineral oil, what does this tell us about the interparticle forces in the red food coloring? ail abiupil mot adi ba (d) Consider two isomers: trans-2,3-difluoro-2-butene or cis-2,3-difluoro-2-butene on H,C CH, F por/ (P) Eb C=C ro pou C=C eenjea trans-2,3-difluoro-2-butene cis-2,3-difluoro-2-butene (i) Both substances have the same molar mass and similar molecular shapes, but the trans isomer has a lower melting point than the cis form. (ii) Which form, if any, exhibits resonance? Explain. Boiling Point punodwo) Butane, C,H10 (CH,CH,CH,CH,) 1°C 33°C Fluorobutane, CH,FCH,CH,CH3 (e) Butane, C,H10 (CH,CH,CH,CH,), has a boiling point of 1°C, but fluorobutane, CH,FCH,CH,CH, has a boiling point of 33°C. Explain.
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