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(a)
Interpretation:
The intermolecular interactions that operate in all molecular substances are to be stated.
Concept introduction:
There are three types of interactions through which the molecules are stabilized. They are hydrogen-bonding interactions, the dipole-dipole interactions and the induced dipole interactions. These interactions influence the properties of the compounds like boiling point, melting point and so on.
(b)
Interpretation:
The intermolecular interactions that operate between all polar molecules are to be stated.
Concept introduction:
There are three types of interactions through which the molecules are stabilized. They are hydrogen-bonding interactions, the dipole-dipole interactions and the induced dipole interactions. These interactions influence the properties of the compounds like boiling point, melting point and so on.
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Chapter 15 Solutions
Bundle: Introductory Chemistry: An Active Learning Approach, 6th + OWLv2, 4 terms (24 months) Printed Access Card
- Using the explanation of unbalanced forces as the source of surface tension, justify why it requires energy to increase the surface area of a liquid. Is there any circumstance in which energy is given off when increasing a liquids surface area?arrow_forwardAre changes in state physical or chemical changes? Explain. What type of forces must be overcome to melt or vaporize a substance (are these forces intramolecular or intermolecular)? Define the molar heat of fusion and molar heat of vaporization. Why is the molar heat of vaporization of water so much larger than its molar heat of fusion? Why does the boiling point of a liquid vary with altitude?arrow_forwardThe enthalpy of vaporization of water is larger than its enthalpy of fusion. Explain why.arrow_forward
- 9.46 The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy would be needed to melt a 5.24-g sample of silicon at its melting point of 1693 K?arrow_forwardWhy are covalent bonds typically much stronger than inter-molecular forces?arrow_forwardWhich type of intermolecular attractive force operates between (a) all molecules; (b) polar molecules; (c) the hydrogen atom of a polar bond and a nearby small, electronegative atom?arrow_forward
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