List I contains organic compounds while list II contains boiling points. Which of the following is correct matching?List I List II (i)n-Butanol (a) 350 K (ii)1-Chlorobutane (b) 309.1 K (iii)n-Butane (c) 307.6 K (iv)Ethoxyethane (d) 390 K
(i)-(d), (ii)-(a),(iii)-(b), (iv)-(c)
n-Butanol has intermolecular hydrogen bonding, so it has the highest boiling point: 390 K, (i)-(d).
1-Chlorobutane is a polar molecule of comparable mass (dipole–dipole forces): about 350 K, (ii)-(a).
Ethoxyethane has only weak dipole–dipole forces (no H-bonding): 307.6 K, (iv)-(c).
The remaining value 309.1 K goes to the hydrocarbon, (iii)-(b) (309.1 K is the textbook value for n-pentane, the hydrocarbon of comparable mass).
Hence, (i)-(d), (ii)-(a),(iii)-(b), (iv)-(c).
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