Arrange the following compounds in increasing | vedclass

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(A) The $C-OH$ bond length depends on the extent of resonance (partial double bond character).In $CH_3OH$,the $C-OH$ bond is a pure single bond,so it

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$phenol < p-$ethoxyphenol $< methanol$

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(A) The $C-OH$ bond length depends on the extent of resonance (partial double bond character).In $CH_3OH$,the $C-OH$ bond is a pure single bond,so it has the longest bond length.In $phenol$,the lone pair on oxygen participates in resonance with the benzene ring,giving the $C-OH$ bond partial double bond character.In $p-$ethoxyphenol,the $-OEt$ group is a strong electron-donating group ($+M$ effect). This increases the electron density in the ring,which opposes the resonance of the $-OH$ group,thereby reducing the partial double bond character of the $C-OH$ bond compared to phenol.Therefore,the partial double bond character is: $phenol > p-$ethoxyphenol $> methanol$ (pure single bond).Consequently,the bond length order is: $phenol < p-$ethoxyphenol $< methanol$.

Arrange the following compounds in increasing order of $C-OH$ bond length: methanol,phenol,$p-$ethoxyphenol.

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