1.

Place the following alcohols in decreasing order of rate of dehydration with conc. H_2SO_4 . (1)CH_3CH_2CH(OH)CH_2CH_2CH_3 (2)(CH_3)_2C(OH)CH_2CH_2CH_3 (3)CH_3CH_2CH_2CH_2CH_2CH_2-OH (4)(CH_3)_2C(OH)CH(CH_3)_2

Answer»

4 gt 2 gt 1 gt 3
1 gt 2 gt 3 gt 4
4 gt 3 gt 2 gt 1
4 gt 3 gt 1 gt 2

Solution :The alcohol 4 and 2 are `3^@` alcohol but alcohol 4 gives more substituted alkene easily. Alcohol 1 is `2^@` alcohol and alcohol 3 is `1^@` alcohol. The RATE of DEHYDRATION of alcohol with CONCENTRATED `H_2SO_4` follows the ORDER `3^@ gt 2^@ gt 1^@`


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