Table 2.5 Physical Properties of Some Unbranched Alkanes Condensed Structural Formula Melting Point (°C) Boiling Point Density of Liquid* (g/mL at 0°C) Name (°C) Methane CHA -182 -164 (a gas) Ethane CH,CH, -183 -88 (a gas) Propane CH,CH,CH, -190 -42 (a gas) CH,(CH,),CH, CH,(CH,),CH, Butane -138 (a gas) Pentane -130 36 0.626 Нехane CH,(CH,),CH, -95 69 0.659 Неptane CH,(CH,),CH, CH,(CH,),CH, -90 98 0.684 Octane -57 126 0.703 Nonane CH,(CH,),CH, -51 151 0.718 Decane CH,(CH,),CH, -30 174 0.730

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Chapter12: Unsaturated Hydrocarbons
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Problem 12.57E
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What unbranched alkane has about the same boiling point as water? (Refer to Table 2.5 on the physical properties of alkanes.) Calculate the molecular weight of this alkane and compare it with that of water.

Table 2.5 Physical Properties of Some Unbranched Alkanes
Condensed
Structural
Formula
Melting
Point
(°C)
Boiling
Point
Density
of Liquid*
(g/mL at 0°C)
Name
(°C)
Methane
CHA
-182
-164
(a gas)
Ethane
CH,CH,
-183
-88
(a gas)
Propane
CH,CH,CH,
-190
-42
(a gas)
CH,(CH,),CH,
CH,(CH,),CH,
Butane
-138
(a gas)
Pentane
-130
36
0.626
Нехane
CH,(CH,),CH,
-95
69
0.659
Неptane
CH,(CH,),CH,
CH,(CH,),CH,
-90
98
0.684
Octane
-57
126
0.703
Nonane
CH,(CH,),CH,
-51
151
0.718
Decane
CH,(CH,),CH,
-30
174
0.730
Transcribed Image Text:Table 2.5 Physical Properties of Some Unbranched Alkanes Condensed Structural Formula Melting Point (°C) Boiling Point Density of Liquid* (g/mL at 0°C) Name (°C) Methane CHA -182 -164 (a gas) Ethane CH,CH, -183 -88 (a gas) Propane CH,CH,CH, -190 -42 (a gas) CH,(CH,),CH, CH,(CH,),CH, Butane -138 (a gas) Pentane -130 36 0.626 Нехane CH,(CH,),CH, -95 69 0.659 Неptane CH,(CH,),CH, CH,(CH,),CH, -90 98 0.684 Octane -57 126 0.703 Nonane CH,(CH,),CH, -51 151 0.718 Decane CH,(CH,),CH, -30 174 0.730
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