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Practice Problem 2
Use the following data to propose a way of distinguishing between ionic and covalent compounds.
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Compound
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Melting Point ( oC)
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Boiling Point ( oC)
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Cr2O3
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2266
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4000
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SrF2
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1470
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2489
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CCl4
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-22.9
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76.6
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CH3OH
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-97.8
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64.7
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Solution
In general, ionic compounds (such as Cr2O3 and SrF2) have much higher melting points and boiling points than covalent compounds (such as CCl4 and CH3OH).
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