Summary of Intermolecular forces – Flashcards
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Hydrogen Bond forms Between
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Hydrogen nitrogen or flourine
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dipole-dipole bonds form between
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2 polar molecules (NOT H,N or F)
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London dispersion forces forms between
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2 non-polar molecules
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example of hydrogen bond
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water, hydrofluoric acid, ammonia
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example of dipole-dipole bonds
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CO and HCF
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example of london dispersion forces
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O2 and CH4
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relative strength of hydrogen bonds
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very strong
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relative strength of dipole-diple bonds
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strong
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relative strength of london dispersion forces
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very weak
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resulting properties of hydrogen bonds
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capillary action, adhesion
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resulting properties of dipole-dipole
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liquid at room temperature
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resulting properties of london dispersion forces
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gas at room temperature
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where do inter-molecular forces happen?
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between two different molecules
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what are al inter molecular forces considered to be?
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weak forces
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what are the only substances that experience inter-molecular forces?
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polar covalent and non-polar covalent compounds
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when are all inter-molecular forces caused?
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when covalent molecules have a slight dipole moment
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what does having a dipole moment mean?
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that the molecule has slightly charged ends that attract or repel each other due to electrostatic forces
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what are inter-molecular forces useful for
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determining a compounds melting point, boiling point, and solubility.
