Chapter 7: Problem 81
Arrange in order of increasing boiling point: \(\mathrm{CO}_{2}, \mathrm{SO}_{2}, \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}, \mathrm{Al}\)
Chapter 7: Problem 81
Arrange in order of increasing boiling point: \(\mathrm{CO}_{2}, \mathrm{SO}_{2}, \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}, \mathrm{Al}\)
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Get started for freeWhy would either covalent bonds or London forces be inappropriate for attaching the two strands of DNA to each other?
Predict which compound in each pair will have the higher melting point, and explain why for each pair. (a) HI or KI (b) \(\mathrm{Na}_{2} \mathrm{O}\) or \(\mathrm{H}_{2} \mathrm{O}\) (c) \(\mathrm{CaF}_{2}\) or \(\mathrm{HF}\) (d) \(\mathrm{SiO}_{2}\) or \(\mathrm{CO}_{2}\)
Ethylene glycol, \(\mathrm{CH}_{2} \mathrm{OHCH}_{2} \mathrm{OH}\), and pentane, \(\mathrm{C}_{5} \mathrm{H}_{12}\), have approximately the same molar mass. Nevertheless, one of these compounds boils at \(198{ }^{\circ} \mathrm{C}\), and the other boils at \(36{ }^{\circ} \mathrm{C}\). Which compound boils at which temperature? Use an argument based on intermolecular forces to justify your choice.
Eicosane, \(\mathrm{C}_{20} \mathrm{H}_{42}\), has a higher melting point and a higher boiling point than water, even though water has hydrogen bonds between molecules and eicosane does not. Explain how this can be.
What is wrong with the statement "London forces are always weaker than dipole- dipole forces"?
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