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Rank the following subtances in order of...

Rank the following subtances in order of increasing boiling points (lowest`rarr`highest) :
I. `CH_(3)CH_(2)CH_(2)OH` II. `(CH_(3))_(2)CHOCH_(3)`
III. `(CH_(3))_(3)COH" " IV. (CH_(3))_(4)C.`

Text Solution

Verified by Experts

The realtive acidic strengths of the alcohols in an increasing order is:
`(CH_(3))_(3)COH lt CH_(3)CH(OH)CH_(3) lt CH_(3)CH_(2)OH lt CH_(3)OH`
The acidic strength of alcohol is due to the cleavage of `O-H` bond. The alkyl group with `+I` effect tends to decreases the acidic strength. Greater the number of alkyl groups present or more the size of such groups, difficult will be the bond cleavage and thus, lesser will be the acidic strength. The order of relative acidic strength is justified.
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