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16. (Q which alkane has the highest boiling point? a) hexane, b) 2, 3 2,2,-dimethylbutane, d) 3-methylpentane, e) 2-methylpentane. Which of the followingprases are not corectly associated wit naction is possible. 2. Rate is affected by solvent polarity. 3The strength of the mucleophile is impotant in determining rate. 4. The reactivity series is tertiary z secondary primaty.proceeds with complete version of configuration. a) 3,5, b)5 only, o23.5 a 3 only. 18W CH3OCH3. a) 1 and 2, b) 1 and 3, c) 1 and 4, d) 2 and 3, e) 2,3, and 4. 19. 20.The relationship between magnetic field strength and the energy difference between muclear spin states is: a) They are independent of each other. b) They are directly proportional, e) They aue inversely proportional. D) The relationship varies from molecule to molecule. Which of the following molecules would you expect to be hampolen CH,.c formal charge on phosporus in (CH3)4P is: a) 0, b)-1, o)+1,d)+2.

Explanation / Answer

16. The boiling point of hexane = 68 oC

The boiling point of 2,3-dimethylbutane = 58 oC

The boiling point of 2,2-dimethylbutane = 50 oC

The boiling point of 3-methylpentane = 63 oC

The boiling point of 2-methylpentane = 60 oC

Here, hexane is the most linear alkane among the given five options, as a result, the density of hexane is high. Hence, hexane has the highest boiling point, i.e. option a.

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