Choose the correct order arranged in decreasing order of basicity

Options

A. `CH-=C^(-)gtCH_(3)O^(-)gtOH^(-)`
B. `OH^(-)gtCH_(3)O^(-)gtCH-=C^(-)`
C. `CH_(3)O^(-)gtOH^(-)gtCH-=C^(-)`
D. `CH_(3)O^(-)gtCH-=C^(-)gtOH^(-)`

Answer

A

Explanation

Conjugate bas `+ H^(+)rarr` Conjugate acid. Thus corresponding conjugate acids are
`H_(2)OgtCH_(3)OHgtCH.-=CH`
Since the stronger the acid, the weaker the base, the correct order of basic strength will be
`CH-=C^(-)gtCH_(3)O^(-)gtOH^(-)`