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Question

The correct order of increasing basicity of the following is H2O,OH−,CH3OH,CH3O−:

A
CH3OH<H2O<OH<CH3O
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B
H2O<CH3OH<CH3O<OH
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C
H2O<CH3OH<OH<CH3O
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D
CH3OH<H2O<CH3O<OH
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Solution

The correct option is C H2O<CH3OH<OH<CH3O
Basicity depends upon the availability of lone pair of electrons for donation. Between H2O and CH3OH, the later is more basic because of the presence of electron donating CH3 group.
Thus, CH3OH>H2O (basicity order)
Conjugate base of weaker acid is strong.
Thus, CH3O>OH (basicity order)
Hence, the increasing order of basicity is
CH3O>OH>CH3OH>H2O.

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