1.

The relative order of basicity of conjugate bases is

Answer»

`OH^(-) lt OR^(-) lt HC -= C^(-)`
`OH^(-) lt HC -= C^(-) lt OR^(-)`
`HC -= C^(-) lt OH^(-) lt OR^(-)`
`HC -= C^(-) lt OR^(-) lt OH^(-)`

Solution :Strong acid will have a WEAK conjugate BASE and vice versa (Bronsted-Lowery concept of acids-base).
Acidic charatcer of conjugate acids is
`H_(2)O gt ROH gt HC -= CH`
`:.` the order of basicity is
`underset("weakest base")(OH^(-)) lt underset("STRONGEST base")( RO^(-)lt HC -= C^(-))`


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